SSC CHSL 2022 PYQ — Question 60

The correct answer is option 3 i.e. 94.5.

Given:

Two numbers are 42 and 63

Concept Used:

If a,b, and c are in proportion,

$c = {b^2 \over a}$  ....(i)

Explanation:

According to the given question,

Third proportional = $63 ×63 \over 42$  

⇒ Third proportional = 189/2 = 94.5

Hence the third proportional of 42 and 63 is 94.5.