Finding the Third Proportional to 31,539.88 and 68,884.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,539.88 : 68,884.75 = 68,884.75 : x
2. Step 2: Convert to fraction form
   31,539.88/68,884.75 = 68,884.75/x
3. Step 3: Cross multiply
   31,539.88x = 68,884.75 × 68,884.75
4. Step 4: Simplify right side
   31,539.88x = 4,745,108,782.56
5. Step 5: Solve for x
   x = 4,745,108,782.56/31,539.88
6. Step 6: Final answer
   x = 150,447.93