Finding the Third Proportional to 225,548 and 489,972

Step by Step Solution

1. Step 1: Write the proportion equation
   225,548 : 489,972 = 489,972 : x
2. Step 2: Convert to fraction form
   225,548/489,972 = 489,972/x
3. Step 3: Cross multiply
   225,548x = 489,972 × 489,972
4. Step 4: Simplify right side
   225,548x = 240,072,560,784
5. Step 5: Solve for x
   x = 240,072,560,784/225,548
6. Step 6: Final answer
   x = 1,064,396.76