Finding the Third Proportional to 221,960 and 489,162

Step by Step Solution

1. Step 1: Write the proportion equation
   221,960 : 489,162 = 489,162 : x
2. Step 2: Convert to fraction form
   221,960/489,162 = 489,162/x
3. Step 3: Cross multiply
   221,960x = 489,162 × 489,162
4. Step 4: Simplify right side
   221,960x = 239,279,462,244
5. Step 5: Solve for x
   x = 239,279,462,244/221,960
6. Step 6: Final answer
   x = 1,078,029.66