Hi @Rahul123123123 ,
This can be asnswered if you can please share little more detail about the dimensionality of these 3 modules, and the relation between those dimensions (if any).
As you know, in ideal scenario, if there is a relation between dimensions of these modules through hierarchy or properties, we can do calculations in third module. Or, if the third module has got the dimensions of both module1 and module2, then also it's a straight forward calculation in module3.
Please expect more appropriate response, after sharing more details about the dimensions.