Finding the Third Proportional to 57,723.75 and 86,353.88

Step by Step Solution

1. Step 1: Write the proportion equation
   57,723.75 : 86,353.88 = 86,353.88 : x
2. Step 2: Convert to fraction form
   57,723.75/86,353.88 = 86,353.88/x
3. Step 3: Cross multiply
   57,723.75x = 86,353.88 × 86,353.88
4. Step 4: Simplify right side
   57,723.75x = 7,456,991,727.52
5. Step 5: Solve for x
   x = 7,456,991,727.52/57,723.75
6. Step 6: Final answer
   x = 129,184.12