Finding the Third Proportional to 39,609 and 60,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,609 : 60,142.50 = 60,142.50 : x
2. Step 2: Convert to fraction form
   39,609/60,142.50 = 60,142.50/x
3. Step 3: Cross multiply
   39,609x = 60,142.50 × 60,142.50
4. Step 4: Simplify right side
   39,609x = 3,617,120,306.25
5. Step 5: Solve for x
   x = 3,617,120,306.25/39,609
6. Step 6: Final answer
   x = 91,320.67