Finding the Third Proportional to 663,728 and 1,456,480

Step by Step Solution

1. Step 1: Write the proportion equation
   663,728 : 1,456,480 = 1,456,480 : x
2. Step 2: Convert to fraction form
   663,728/1,456,480 = 1,456,480/x
3. Step 3: Cross multiply
   663,728x = 1,456,480 × 1,456,480
4. Step 4: Simplify right side
   663,728x = 2,121,333,990,400
5. Step 5: Solve for x
   x = 2,121,333,990,400/663,728
6. Step 6: Final answer
   x = 3,196,089.35