Finding the Third Proportional to 322,456.50 and 683,328

Step by Step Solution

1. Step 1: Write the proportion equation
   322,456.50 : 683,328 = 683,328 : x
2. Step 2: Convert to fraction form
   322,456.50/683,328 = 683,328/x
3. Step 3: Cross multiply
   322,456.50x = 683,328 × 683,328
4. Step 4: Simplify right side
   322,456.50x = 466,937,155,584
5. Step 5: Solve for x
   x = 466,937,155,584/322,456.50
6. Step 6: Final answer
   x = 1,448,062.47