Finding the Third Proportional to 225,312 and 489,552

Step by Step Solution

1. Step 1: Write the proportion equation
   225,312 : 489,552 = 489,552 : x
2. Step 2: Convert to fraction form
   225,312/489,552 = 489,552/x
3. Step 3: Cross multiply
   225,312x = 489,552 × 489,552
4. Step 4: Simplify right side
   225,312x = 239,661,160,704
5. Step 5: Solve for x
   x = 239,661,160,704/225,312
6. Step 6: Final answer
   x = 1,063,685.74