Finding the Third Proportional to 388,544,849 and 792,697,510

Step by Step Solution

1. Step 1: Write the proportion equation
   388,544,849 : 792,697,510 = 792,697,510 : x
2. Step 2: Convert to fraction form
   388,544,849/792,697,510 = 792,697,510/x
3. Step 3: Cross multiply
   388,544,849x = 792,697,510 × 792,697,510
4. Step 4: Simplify right side
   388,544,849x = 628,369,342,360,200,064
5. Step 5: Solve for x
   x = 628,369,342,360,200,064/388,544,849
6. Step 6: Final answer
   x = 1,617,237,608.42