Finding the Third Proportional to 3,860,469 and 8,356,410

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860,469 : 8,356,410 = 8,356,410 : x
2. Step 2: Convert to fraction form
   3,860,469/8,356,410 = 8,356,410/x
3. Step 3: Cross multiply
   3,860,469x = 8,356,410 × 8,356,410
4. Step 4: Simplify right side
   3,860,469x = 69,829,588,088,100
5. Step 5: Solve for x
   x = 69,829,588,088,100/3,860,469
6. Step 6: Final answer
   x = 18,088,369.08