Finding the Third Proportional to 31,687.88 and 68,055.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,687.88 : 68,055.75 = 68,055.75 : x
2. Step 2: Convert to fraction form
   31,687.88/68,055.75 = 68,055.75/x
3. Step 3: Cross multiply
   31,687.88x = 68,055.75 × 68,055.75
4. Step 4: Simplify right side
   31,687.88x = 4,631,585,108.06
5. Step 5: Solve for x
   x = 4,631,585,108.06/31,687.88
6. Step 6: Final answer
   x = 146,162.69