Finding the Third Proportional to 3,869,616 and 8,369,616

Step by Step Solution

1. Step 1: Write the proportion equation
   3,869,616 : 8,369,616 = 8,369,616 : x
2. Step 2: Convert to fraction form
   3,869,616/8,369,616 = 8,369,616/x
3. Step 3: Cross multiply
   3,869,616x = 8,369,616 × 8,369,616
4. Step 4: Simplify right side
   3,869,616x = 70,050,471,987,456
5. Step 5: Solve for x
   x = 70,050,471,987,456/3,869,616
6. Step 6: Final answer
   x = 18,102,693.39