Finding the Third Proportional to 3,939,517 and 8,467,550

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,517 : 8,467,550 = 8,467,550 : x
2. Step 2: Convert to fraction form
   3,939,517/8,467,550 = 8,467,550/x
3. Step 3: Cross multiply
   3,939,517x = 8,467,550 × 8,467,550
4. Step 4: Simplify right side
   3,939,517x = 71,699,403,002,500
5. Step 5: Solve for x
   x = 71,699,403,002,500/3,939,517
6. Step 6: Final answer
   x = 18,200,049.14