Finding the Third Proportional to 391,061,492 and 849,383,530

Step by Step Solution

1. Step 1: Write the proportion equation
   391,061,492 : 849,383,530 = 849,383,530 : x
2. Step 2: Convert to fraction form
   391,061,492/849,383,530 = 849,383,530/x
3. Step 3: Cross multiply
   391,061,492x = 849,383,530 × 849,383,530
4. Step 4: Simplify right side
   391,061,492x = 721,452,381,035,260,928
5. Step 5: Solve for x
   x = 721,452,381,035,260,928/391,061,492
6. Step 6: Final answer
   x = 1,844,856,616.66