Finding the Third Proportional to 12,687.75 and 29,242.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,687.75 : 29,242.13 = 29,242.13 : x
2. Step 2: Convert to fraction form
   12,687.75/29,242.13 = 29,242.13/x
3. Step 3: Cross multiply
   12,687.75x = 29,242.13 × 29,242.13
4. Step 4: Simplify right side
   12,687.75x = 855,101,874.52
5. Step 5: Solve for x
   x = 855,101,874.52/12,687.75
6. Step 6: Final answer
   x = 67,395.86