Finding the Third Proportional to 538,903.13 and 898,128

Step by Step Solution

1. Step 1: Write the proportion equation
   538,903.13 : 898,128 = 898,128 : x
2. Step 2: Convert to fraction form
   538,903.13/898,128 = 898,128/x
3. Step 3: Cross multiply
   538,903.13x = 898,128 × 898,128
4. Step 4: Simplify right side
   538,903.13x = 806,633,904,384
5. Step 5: Solve for x
   x = 806,633,904,384/538,903.13
6. Step 6: Final answer
   x = 1,496,806.88