Finding the Third Proportional to 3,616.31 and 8,175.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,616.31 : 8,175.09 = 8,175.09 : x
2. Step 2: Convert to fraction form
   3,616.31/8,175.09 = 8,175.09/x
3. Step 3: Cross multiply
   3,616.31x = 8,175.09 × 8,175.09
4. Step 4: Simplify right side
   3,616.31x = 66,832,157.82
5. Step 5: Solve for x
   x = 66,832,157.82/3,616.31
6. Step 6: Final answer
   x = 18,480.75