The lattice shown is continued for 100 rows. What will be the third number in the 100th row?
Row 1: 1 2 3 4 5 6 7
Row 2: 8 9 10 11 12 13 14
Row 3: 15 16 17 18 19 20 21
Row 4: 22 23 24 25 26 27 28
