Finding the Third Proportional to 81,282,730.50 and 123,829,684.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,282,730.50 : 123,829,684.50 = 123,829,684.50 : x
2. Step 2: Convert to fraction form
   81,282,730.50/123,829,684.50 = 123,829,684.50/x
3. Step 3: Cross multiply
   81,282,730.50x = 123,829,684.50 × 123,829,684.50
4. Step 4: Simplify right side
   81,282,730.50x = 15,333,790,763,369,540
5. Step 5: Solve for x
   x = 15,333,790,763,369,540/81,282,730.50
6. Step 6: Final answer
   x = 188,647,584.41