Finding the Third Proportional to 548,290 and 1,222,649

Step by Step Solution

1. Step 1: Write the proportion equation
   548,290 : 1,222,649 = 1,222,649 : x
2. Step 2: Convert to fraction form
   548,290/1,222,649 = 1,222,649/x
3. Step 3: Cross multiply
   548,290x = 1,222,649 × 1,222,649
4. Step 4: Simplify right side
   548,290x = 1,494,870,577,201
5. Step 5: Solve for x
   x = 1,494,870,577,201/548,290
6. Step 6: Final answer
   x = 2,726,423.20