Finding the Third Proportional to 250,340 and 521,398

Step by Step Solution

1. Step 1: Write the proportion equation
   250,340 : 521,398 = 521,398 : x
2. Step 2: Convert to fraction form
   250,340/521,398 = 521,398/x
3. Step 3: Cross multiply
   250,340x = 521,398 × 521,398
4. Step 4: Simplify right side
   250,340x = 271,855,874,404
5. Step 5: Solve for x
   x = 271,855,874,404/250,340
6. Step 6: Final answer
   x = 1,085,946.61