Finding the Third Proportional to 39,912.75 and 76,727.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,912.75 : 76,727.25 = 76,727.25 : x
2. Step 2: Convert to fraction form
   39,912.75/76,727.25 = 76,727.25/x
3. Step 3: Cross multiply
   39,912.75x = 76,727.25 × 76,727.25
4. Step 4: Simplify right side
   39,912.75x = 5,887,070,892.56
5. Step 5: Solve for x
   x = 5,887,070,892.56/39,912.75
6. Step 6: Final answer
   x = 147,498.50