Finding the Third Proportional to 7,766,562 and 12,156,891

Step by Step Solution

1. Step 1: Write the proportion equation
   7,766,562 : 12,156,891 = 12,156,891 : x
2. Step 2: Convert to fraction form
   7,766,562/12,156,891 = 12,156,891/x
3. Step 3: Cross multiply
   7,766,562x = 12,156,891 × 12,156,891
4. Step 4: Simplify right side
   7,766,562x = 147,789,998,785,881
5. Step 5: Solve for x
   x = 147,789,998,785,881/7,766,562
6. Step 6: Final answer
   x = 19,029,011.65