Finding the Third Proportional to 391,061,498 and 849,383,542

Step by Step Solution

1. Step 1: Write the proportion equation
   391,061,498 : 849,383,542 = 849,383,542 : x
2. Step 2: Convert to fraction form
   391,061,498/849,383,542 = 849,383,542/x
3. Step 3: Cross multiply
   391,061,498x = 849,383,542 × 849,383,542
4. Step 4: Simplify right side
   391,061,498x = 721,452,401,420,465,792
5. Step 5: Solve for x
   x = 721,452,401,420,465,792/391,061,498
6. Step 6: Final answer
   x = 1,844,856,640.48