Finding the Third Proportional to 31,255.88 and 66,612.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,255.88 : 66,612.38 = 66,612.38 : x
2. Step 2: Convert to fraction form
   31,255.88/66,612.38 = 66,612.38/x
3. Step 3: Cross multiply
   31,255.88x = 66,612.38 × 66,612.38
4. Step 4: Simplify right side
   31,255.88x = 4,437,208,503.14
5. Step 5: Solve for x
   x = 4,437,208,503.14/31,255.88
6. Step 6: Final answer
   x = 141,963.98