Finding the Third Proportional to 225,560 and 489,988

Step by Step Solution

1. Step 1: Write the proportion equation
   225,560 : 489,988 = 489,988 : x
2. Step 2: Convert to fraction form
   225,560/489,988 = 489,988/x
3. Step 3: Cross multiply
   225,560x = 489,988 × 489,988
4. Step 4: Simplify right side
   225,560x = 240,088,240,144
5. Step 5: Solve for x
   x = 240,088,240,144/225,560
6. Step 6: Final answer
   x = 1,064,409.65