Finding the Third Proportional to 31,282.88 and 68,799.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,282.88 : 68,799.38 = 68,799.38 : x
2. Step 2: Convert to fraction form
   31,282.88/68,799.38 = 68,799.38/x
3. Step 3: Cross multiply
   31,282.88x = 68,799.38 × 68,799.38
4. Step 4: Simplify right side
   31,282.88x = 4,733,354,000.39
5. Step 5: Solve for x
   x = 4,733,354,000.39/31,282.88
6. Step 6: Final answer
   x = 151,308.15