First you can divide 216 by 3
This will give you,
216 รท 3 = 72
Therefore, 72 + 72 + 72 = 216
But we want 3 different consecutive numbers,
So you can change, 72 + 72 + 72 = 216
To, 71 + 72 + 73 = 216
But we want even, consecutive numbers,
So, 70 + 72 + 74 = 216
Therefore the 3 consecutive numbers you are looking for are 70, 72, 74