Finding the Third Proportional to 4,885,680 and 10,420,704

Step by Step Solution

1. Step 1: Write the proportion equation
   4,885,680 : 10,420,704 = 10,420,704 : x
2. Step 2: Convert to fraction form
   4,885,680/10,420,704 = 10,420,704/x
3. Step 3: Cross multiply
   4,885,680x = 10,420,704 × 10,420,704
4. Step 4: Simplify right side
   4,885,680x = 108,591,071,855,616
5. Step 5: Solve for x
   x = 108,591,071,855,616/4,885,680
6. Step 6: Final answer
   x = 22,226,398.75