Finding the Third Proportional to 225,152 and 489,328

Step by Step Solution

1. Step 1: Write the proportion equation
   225,152 : 489,328 = 489,328 : x
2. Step 2: Convert to fraction form
   225,152/489,328 = 489,328/x
3. Step 3: Cross multiply
   225,152x = 489,328 × 489,328
4. Step 4: Simplify right side
   225,152x = 239,441,891,584
5. Step 5: Solve for x
   x = 239,441,891,584/225,152
6. Step 6: Final answer
   x = 1,063,467.75