Find the missing length. The triangles in each pair are similar?

Answer:
The length of the missing side is 117 :)
Step-by-step explanation:
I set up a proportion using sides NM, LD, LN, and DC :
182/28 = x/18
182(18) = 28x
3276 = 28x
3276/28 = 28x/28
x = 117