Finding the Third Proportional to 60,639.75 and 131,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,639.75 : 131,404.50 = 131,404.50 : x
2. Step 2: Convert to fraction form
   60,639.75/131,404.50 = 131,404.50/x
3. Step 3: Cross multiply
   60,639.75x = 131,404.50 × 131,404.50
4. Step 4: Simplify right side
   60,639.75x = 17,267,142,620.25
5. Step 5: Solve for x
   x = 17,267,142,620.25/60,639.75
6. Step 6: Final answer
   x = 284,749.57