$\begin{array}{l}\text{Here,}\\ \Rightarrow [\frac{\text{144 X 144}}{48}\times \text{18}]÷\text{36=}\sqrt{\text{?}}\\ \\ \Rightarrow \text{ [144}\times \text{3}\times \text{18]}÷\text{36 =}\sqrt{\text{?}}\\ \\ \Rightarrow \text{\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}? = 7776}÷{\text{36 = (216)}}^{\text{2}}\text{= 46656}\end{array}$

Hence, Option D is correct.