Finding the Third Proportional to 8,216,746 and 12,822,545.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,216,746 : 12,822,545.50 = 12,822,545.50 : x
2. Step 2: Convert to fraction form
   8,216,746/12,822,545.50 = 12,822,545.50/x
3. Step 3: Cross multiply
   8,216,746x = 12,822,545.50 × 12,822,545.50
4. Step 4: Simplify right side
   8,216,746x = 164,417,673,099,570.25
5. Step 5: Solve for x
   x = 164,417,673,099,570.25/8,216,746
6. Step 6: Final answer
   x = 20,010,071.27