Finding the Third Proportional to 406,978 and 884,020

Step by Step Solution

1. Step 1: Write the proportion equation
   406,978 : 884,020 = 884,020 : x
2. Step 2: Convert to fraction form
   406,978/884,020 = 884,020/x
3. Step 3: Cross multiply
   406,978x = 884,020 × 884,020
4. Step 4: Simplify right side
   406,978x = 781,491,360,400
5. Step 5: Solve for x
   x = 781,491,360,400/406,978
6. Step 6: Final answer
   x = 1,920,229.99