Certain number of persons sit in a linear row from west to east end and face in the north direction. The information about only few persons is known.
W sits third to the right of F. W sits third from the right end.

H and J are neighbours of F. P sits second to the left of H.

Six persons sit between S and P. Neither S nor X is neighbour of W.
X sits fifth to the right of S.

The number of persons sitting to the left of X is equal to the number of persons sitting to the right of F.
Therefore, the final arrangement is:

H sits fourth to the right of X.