Finding the Third Proportional to 39,723.75 and 58,657.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,723.75 : 58,657.50 = 58,657.50 : x
2. Step 2: Convert to fraction form
   39,723.75/58,657.50 = 58,657.50/x
3. Step 3: Cross multiply
   39,723.75x = 58,657.50 × 58,657.50
4. Step 4: Simplify right side
   39,723.75x = 3,440,702,306.25
5. Step 5: Solve for x
   x = 3,440,702,306.25/39,723.75
6. Step 6: Final answer
   x = 86,615.75