Finding the Third Proportional to 225,018 and 489,492

Step by Step Solution

1. Step 1: Write the proportion equation
   225,018 : 489,492 = 489,492 : x
2. Step 2: Convert to fraction form
   225,018/489,492 = 489,492/x
3. Step 3: Cross multiply
   225,018x = 489,492 × 489,492
4. Step 4: Simplify right side
   225,018x = 239,602,418,064
5. Step 5: Solve for x
   x = 239,602,418,064/225,018
6. Step 6: Final answer
   x = 1,064,814.45