Finding the Third Proportional to 3,870,934,938 and 8,494,337,412

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870,934,938 : 8,494,337,412 = 8,494,337,412 : x
2. Step 2: Convert to fraction form
   3,870,934,938/8,494,337,412 = 8,494,337,412/x
3. Step 3: Cross multiply
   3,870,934,938x = 8,494,337,412 × 8,494,337,412
4. Step 4: Simplify right side
   3,870,934,938x = 72,153,768,068,902,854,656
5. Step 5: Solve for x
   x = 72,153,768,068,902,854,656/3,870,934,938
6. Step 6: Final answer
   x = 18,639,881,378.68