Finding the Third Proportional to 250,584 and 521,904

Step by Step Solution

1. Step 1: Write the proportion equation
   250,584 : 521,904 = 521,904 : x
2. Step 2: Convert to fraction form
   250,584/521,904 = 521,904/x
3. Step 3: Cross multiply
   250,584x = 521,904 × 521,904
4. Step 4: Simplify right side
   250,584x = 272,383,785,216
5. Step 5: Solve for x
   x = 272,383,785,216/250,584
6. Step 6: Final answer
   x = 1,086,995.92