Find the least nu

According to question,

In order to find the square root of the given number we will use the long division method.

Hence,

Using long division method,

Therefore, to get a perfect square than the given number we have to take the square of the next natural number of the quotient, i.e. 78

792 = 6241

Therefore,

Number that should be added to the given number to make it a perfect square = 6241 – 6203

= 38

Thus, the perfect square obtained is 6241 and its square root is 79