Find a third proportional to the numbers 2 and 3.

4.6 4.5 3.6 3.2

4.5

⇒ a : b :: b : c Third proportion (c) = \(\frac{b^2}{a}\) Here, a = 2, b = 3, ∴ c = \(\frac{b^2}{a}\) = \(\frac{9}{2}\) = 4.5