Finding the Third Proportional to 250,664 and 521,981

Step by Step Solution

1. Step 1: Write the proportion equation
   250,664 : 521,981 = 521,981 : x
2. Step 2: Convert to fraction form
   250,664/521,981 = 521,981/x
3. Step 3: Cross multiply
   250,664x = 521,981 × 521,981
4. Step 4: Simplify right side
   250,664x = 272,464,164,361
5. Step 5: Solve for x
   x = 272,464,164,361/250,664
6. Step 6: Final answer
   x = 1,086,969.67