Finding the Third Proportional to 67,639.50 and 96,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,639.50 : 96,142.50 = 96,142.50 : x
2. Step 2: Convert to fraction form
   67,639.50/96,142.50 = 96,142.50/x
3. Step 3: Cross multiply
   67,639.50x = 96,142.50 × 96,142.50
4. Step 4: Simplify right side
   67,639.50x = 9,243,380,306.25
5. Step 5: Solve for x
   x = 9,243,380,306.25/67,639.50
6. Step 6: Final answer
   x = 136,656.54