Finding the Third Proportional to 3,883,446 and 8,513,388

Step by Step Solution

1. Step 1: Write the proportion equation
   3,883,446 : 8,513,388 = 8,513,388 : x
2. Step 2: Convert to fraction form
   3,883,446/8,513,388 = 8,513,388/x
3. Step 3: Cross multiply
   3,883,446x = 8,513,388 × 8,513,388
4. Step 4: Simplify right side
   3,883,446x = 72,477,775,238,544
5. Step 5: Solve for x
   x = 72,477,775,238,544/3,883,446
6. Step 6: Final answer
   x = 18,663,263.31