Finding the Third Proportional to 482,978 and 1,028,320

Step by Step Solution

1. Step 1: Write the proportion equation
   482,978 : 1,028,320 = 1,028,320 : x
2. Step 2: Convert to fraction form
   482,978/1,028,320 = 1,028,320/x
3. Step 3: Cross multiply
   482,978x = 1,028,320 × 1,028,320
4. Step 4: Simplify right side
   482,978x = 1,057,442,022,400
5. Step 5: Solve for x
   x = 1,057,442,022,400/482,978
6. Step 6: Final answer
   x = 2,189,420.68