Finding the Third Proportional to 443,628 and 682,578

Step by Step Solution

1. Step 1: Write the proportion equation
   443,628 : 682,578 = 682,578 : x
2. Step 2: Convert to fraction form
   443,628/682,578 = 682,578/x
3. Step 3: Cross multiply
   443,628x = 682,578 × 682,578
4. Step 4: Simplify right side
   443,628x = 465,912,726,084
5. Step 5: Solve for x
   x = 465,912,726,084/443,628
6. Step 6: Final answer
   x = 1,050,232.91