RankedMin
RankedMin[list, n] gives the nth smallest element in list.
RankedMin[list, -n] gives the nth largest element in list.
Examples
Get the 2nd smallest element:
RankedMin[{3, 1, 4, 1, 5, 9, 2, 6}, 2]
(* 1 *)Get the 3rd largest element:
RankedMin[{3, 1, 4, 1, 5, 9, 2, 6}, -3]
(* 5 *)Please visit the official Wolfram Language Reference for more details.