Physics Question from JEE Main 2023 · 13 April, Shift 2

Three point charges $q$, $-2q$ and $2q$ are placed on the $x$-axis at distances $x = 0$, $x = \frac{3}{4}R$ and $x = R$ respectively from the origin. If $q = 2 \times 10^{-6} \, \text{C}$ and $R = 2 \, \text{cm}$, the magnitude of the net force experienced by the charge $-2q$ is _____ $\text{N}$.