Finding the Third Proportional to 31,177.88 and 68,187.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,177.88 : 68,187.75 = 68,187.75 : x
2. Step 2: Convert to fraction form
   31,177.88/68,187.75 = 68,187.75/x
3. Step 3: Cross multiply
   31,177.88x = 68,187.75 × 68,187.75
4. Step 4: Simplify right side
   31,177.88x = 4,649,569,250.06
5. Step 5: Solve for x
   x = 4,649,569,250.06/31,177.88
6. Step 6: Final answer
   x = 149,130.41