Finding the Third Proportional to 3,949,380,309.50 and 8,225,648,505

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949,380,309.50 : 8,225,648,505 = 8,225,648,505 : x
2. Step 2: Convert to fraction form
   3,949,380,309.50/8,225,648,505 = 8,225,648,505/x
3. Step 3: Cross multiply
   3,949,380,309.50x = 8,225,648,505 × 8,225,648,505
4. Step 4: Simplify right side
   3,949,380,309.50x = 67,661,293,327,808,733,184
5. Step 5: Solve for x
   x = 67,661,293,327,808,733,184/3,949,380,309.50
6. Step 6: Final answer
   x = 17,132,129,100.12