Finding the Third Proportional to 250,658 and 521,970

Step by Step Solution

1. Step 1: Write the proportion equation
   250,658 : 521,970 = 521,970 : x
2. Step 2: Convert to fraction form
   250,658/521,970 = 521,970/x
3. Step 3: Cross multiply
   250,658x = 521,970 × 521,970
4. Step 4: Simplify right side
   250,658x = 272,452,680,900
5. Step 5: Solve for x
   x = 272,452,680,900/250,658
6. Step 6: Final answer
   x = 1,086,949.87