Finding the Third Proportional to 59,213 and 88,639.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,213 : 88,639.50 = 88,639.50 : x
2. Step 2: Convert to fraction form
   59,213/88,639.50 = 88,639.50/x
3. Step 3: Cross multiply
   59,213x = 88,639.50 × 88,639.50
4. Step 4: Simplify right side
   59,213x = 7,856,960,960.25
5. Step 5: Solve for x
   x = 7,856,960,960.25/59,213
6. Step 6: Final answer
   x = 132,689.80