1. Review the Order:
From the previous problem, we know the relative weight order, as derived from the constraints:
\[
V > G > M > R > A > Y.
\]
In this list:
- The heaviest person is Vikas.
- The second heaviest person is Gopi.
- The third heaviest person is Mohit.
- The fourth heaviest person is Rahul.
- The fifth heaviest person is Aditya.
- The lightest person is Ayush.
2. Answer:
The 3rd heaviest person is \(\boxed{\text{Mohit}}\).