Finding the Third Proportional to 391,147,791.75 and 828,929,524.50

Step by Step Solution

1. Step 1: Write the proportion equation
   391,147,791.75 : 828,929,524.50 = 828,929,524.50 : x
2. Step 2: Convert to fraction form
   391,147,791.75/828,929,524.50 = 828,929,524.50/x
3. Step 3: Cross multiply
   391,147,791.75x = 828,929,524.50 × 828,929,524.50
4. Step 4: Simplify right side
   391,147,791.75x = 687,124,156,587,796,096
5. Step 5: Solve for x
   x = 687,124,156,587,796,096/391,147,791.75
6. Step 6: Final answer
   x = 1,756,686,784.59