Finding the Third Proportional to 312,816.94 and 682,966.69

Step by Step Solution

1. Step 1: Write the proportion equation
   312,816.94 : 682,966.69 = 682,966.69 : x
2. Step 2: Convert to fraction form
   312,816.94/682,966.69 = 682,966.69/x
3. Step 3: Cross multiply
   312,816.94x = 682,966.69 × 682,966.69
4. Step 4: Simplify right side
   312,816.94x = 466,443,496,234.72
5. Step 5: Solve for x
   x = 466,443,496,234.72/312,816.94
6. Step 6: Final answer
   x = 1,491,106.91