Finding the Third Proportional to 3,863,376 and 8,391,600

Step by Step Solution

1. Step 1: Write the proportion equation
   3,863,376 : 8,391,600 = 8,391,600 : x
2. Step 2: Convert to fraction form
   3,863,376/8,391,600 = 8,391,600/x
3. Step 3: Cross multiply
   3,863,376x = 8,391,600 × 8,391,600
4. Step 4: Simplify right side
   3,863,376x = 70,418,950,560,000
5. Step 5: Solve for x
   x = 70,418,950,560,000/3,863,376
6. Step 6: Final answer
   x = 18,227,309.63