Finding the Third Proportional to 458,128 and 928,568

Step by Step Solution

1. Step 1: Write the proportion equation
   458,128 : 928,568 = 928,568 : x
2. Step 2: Convert to fraction form
   458,128/928,568 = 928,568/x
3. Step 3: Cross multiply
   458,128x = 928,568 × 928,568
4. Step 4: Simplify right side
   458,128x = 862,238,530,624
5. Step 5: Solve for x
   x = 862,238,530,624/458,128
6. Step 6: Final answer
   x = 1,882,090.88