Finding the Third Proportional to 554,768 and 812,404

Step by Step Solution

1. Step 1: Write the proportion equation
   554,768 : 812,404 = 812,404 : x
2. Step 2: Convert to fraction form
   554,768/812,404 = 812,404/x
3. Step 3: Cross multiply
   554,768x = 812,404 × 812,404
4. Step 4: Simplify right side
   554,768x = 660,000,259,216
5. Step 5: Solve for x
   x = 660,000,259,216/554,768
6. Step 6: Final answer
   x = 1,189,686.97