Finding the Third Proportional to 3,728,612 and 8,168,640

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728,612 : 8,168,640 = 8,168,640 : x
2. Step 2: Convert to fraction form
   3,728,612/8,168,640 = 8,168,640/x
3. Step 3: Cross multiply
   3,728,612x = 8,168,640 × 8,168,640
4. Step 4: Simplify right side
   3,728,612x = 66,726,679,449,600
5. Step 5: Solve for x
   x = 66,726,679,449,600/3,728,612
6. Step 6: Final answer
   x = 17,895,849.57