Comparing two columns of different worksheets and highlight common values in both columns

Question

I have worksheets named WS1 and WS2. I need to compare Column C of WS1 with Column D of WS2. If both columns contain same values then I need to highlight both the cells of "Column C of WS1" and "Column D of WS2".

Example:

Column C of WS1     
500,000.00
260,000.00
65,000.00
30,000.00
46,104.00
530,000.00
350,000.00
55,000.00
7,000.00
2,520.16
30,000.00
210,000.00
650,000.00
10,000.00

Column D of WS2
2520.16
500,000.00
260,000.00
65,000.00
30,000.00
46,104.00
530,000.00
350,000.00
55,000.00
7,000.00
30,000.00
1,827,099.63
210,000.00
650,000.00
10,000.00

If values of Column C = Value of Column D then the cell containing same values in both columns is highlighted. My data is not uniform. They may have repetitive values. I am doing it manually right now and it is time-consuming as I have a lot of data to work on. Can you please suggest me.

Answer 1

Assuming your data starts in row 1 if each sheet, in WS1 column C set up a conditional format formula:

=IFERROR(MATCH(C1,'WS2'!$D:$D,0),FALSE)

In column D of WS2 this conditional format formula:

=IFERROR(MATCH(D1,'WS1'!$C:$C,0),FALSE)

The IFERROR wrapper is needed because an exact MATCH (last parameter = 0) will return a #N/A error if the value isn't found. Conditional format formulas must evaluate to TRUE (format applied) or FALSE (format not applied).