Finding the Third Proportional to 4,156,920,517.50 and 8,608,498,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,156,920,517.50 : 8,608,498,105.50 = 8,608,498,105.50 : x
2. Step 2: Convert to fraction form
   4,156,920,517.50/8,608,498,105.50 = 8,608,498,105.50/x
3. Step 3: Cross multiply
   4,156,920,517.50x = 8,608,498,105.50 × 8,608,498,105.50
4. Step 4: Simplify right side
   4,156,920,517.50x = 74,106,239,632,397,090,816
5. Step 5: Solve for x
   x = 74,106,239,632,397,090,816/4,156,920,517.50
6. Step 6: Final answer
   x = 17,827,196,676.10