Finding the Third Proportional to 311,041.50 and 682,347

Step by Step Solution

1. Step 1: Write the proportion equation
   311,041.50 : 682,347 = 682,347 : x
2. Step 2: Convert to fraction form
   311,041.50/682,347 = 682,347/x
3. Step 3: Cross multiply
   311,041.50x = 682,347 × 682,347
4. Step 4: Simplify right side
   311,041.50x = 465,597,428,409
5. Step 5: Solve for x
   x = 465,597,428,409/311,041.50
6. Step 6: Final answer
   x = 1,496,898.09