Finding the Third Proportional to 355,540 and 725,384

Step by Step Solution

1. Step 1: Write the proportion equation
   355,540 : 725,384 = 725,384 : x
2. Step 2: Convert to fraction form
   355,540/725,384 = 725,384/x
3. Step 3: Cross multiply
   355,540x = 725,384 × 725,384
4. Step 4: Simplify right side
   355,540x = 526,181,947,456
5. Step 5: Solve for x
   x = 526,181,947,456/355,540
6. Step 6: Final answer
   x = 1,479,951.48