Finding the Third Proportional to 3,872,490 and 8,416,632

Step by Step Solution

1. Step 1: Write the proportion equation
   3,872,490 : 8,416,632 = 8,416,632 : x
2. Step 2: Convert to fraction form
   3,872,490/8,416,632 = 8,416,632/x
3. Step 3: Cross multiply
   3,872,490x = 8,416,632 × 8,416,632
4. Step 4: Simplify right side
   3,872,490x = 70,839,694,223,424
5. Step 5: Solve for x
   x = 70,839,694,223,424/3,872,490
6. Step 6: Final answer
   x = 18,293,060.59