Finding the Third Proportional to 13,618.13 and 29,686.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,618.13 : 29,686.50 = 29,686.50 : x
2. Step 2: Convert to fraction form
   13,618.13/29,686.50 = 29,686.50/x
3. Step 3: Cross multiply
   13,618.13x = 29,686.50 × 29,686.50
4. Step 4: Simplify right side
   13,618.13x = 881,288,282.25
5. Step 5: Solve for x
   x = 881,288,282.25/13,618.13
6. Step 6: Final answer
   x = 64,714.36