Finding the Third Proportional to 554,874 and 1,212,486

Step by Step Solution

1. Step 1: Write the proportion equation
   554,874 : 1,212,486 = 1,212,486 : x
2. Step 2: Convert to fraction form
   554,874/1,212,486 = 1,212,486/x
3. Step 3: Cross multiply
   554,874x = 1,212,486 × 1,212,486
4. Step 4: Simplify right side
   554,874x = 1,470,122,300,196
5. Step 5: Solve for x
   x = 1,470,122,300,196/554,874
6. Step 6: Final answer
   x = 2,649,470.51