Finding the Third Proportional to 391,147,754 and 828,929,456

Step by Step Solution

1. Step 1: Write the proportion equation
   391,147,754 : 828,929,456 = 828,929,456 : x
2. Step 2: Convert to fraction form
   391,147,754/828,929,456 = 828,929,456/x
3. Step 3: Cross multiply
   391,147,754x = 828,929,456 × 828,929,456
4. Step 4: Simplify right side
   391,147,754x = 687,124,043,024,455,936
5. Step 5: Solve for x
   x = 687,124,043,024,455,936/391,147,754
6. Step 6: Final answer
   x = 1,756,686,663.79