Finding the Third Proportional to 530,978 and 812,626

Step by Step Solution

1. Step 1: Write the proportion equation
   530,978 : 812,626 = 812,626 : x
2. Step 2: Convert to fraction form
   530,978/812,626 = 812,626/x
3. Step 3: Cross multiply
   530,978x = 812,626 × 812,626
4. Step 4: Simplify right side
   530,978x = 660,361,015,876
5. Step 5: Solve for x
   x = 660,361,015,876/530,978
6. Step 6: Final answer
   x = 1,243,669.26