Finding the Third Proportional to 407,574,672 and 861,152,544

Step by Step Solution

1. Step 1: Write the proportion equation
   407,574,672 : 861,152,544 = 861,152,544 : x
2. Step 2: Convert to fraction form
   407,574,672/861,152,544 = 861,152,544/x
3. Step 3: Cross multiply
   407,574,672x = 861,152,544 × 861,152,544
4. Step 4: Simplify right side
   407,574,672x = 741,583,704,037,671,936
5. Step 5: Solve for x
   x = 741,583,704,037,671,936/407,574,672
6. Step 6: Final answer
   x = 1,819,503,897.04