Question

Find the third proportional to $\frac{1}{9},\frac{2}{3}$.

Answer 1

$\begin{array}{c}\frac{1}{9},\frac{2}{3},.....\\ \Rightarrow proportion=\frac{\frac{2}{3}}{\frac{1}{9}}=\frac{2}{3}\times \frac{9}{1}=6\\ Thirdnumberis\\ \Rightarrow \frac{2}{3}\times 6=4\end{array}$