Finding the Third Proportional to 311,233.50 and 682,725

Step by Step Solution

1. Step 1: Write the proportion equation
   311,233.50 : 682,725 = 682,725 : x
2. Step 2: Convert to fraction form
   311,233.50/682,725 = 682,725/x
3. Step 3: Cross multiply
   311,233.50x = 682,725 × 682,725
4. Step 4: Simplify right side
   311,233.50x = 466,113,425,625
5. Step 5: Solve for x
   x = 466,113,425,625/311,233.50
6. Step 6: Final answer
   x = 1,497,632.57