Finding the Third Proportional to 407,574,675 and 861,152,550

Step by Step Solution

1. Step 1: Write the proportion equation
   407,574,675 : 861,152,550 = 861,152,550 : x
2. Step 2: Convert to fraction form
   407,574,675/861,152,550 = 861,152,550/x
3. Step 3: Cross multiply
   407,574,675x = 861,152,550 × 861,152,550
4. Step 4: Simplify right side
   407,574,675x = 741,583,714,371,502,464
5. Step 5: Solve for x
   x = 741,583,714,371,502,464/407,574,675
6. Step 6: Final answer
   x = 1,819,503,909.00