Finding the Third Proportional to 144,978 and 222,907

Step by Step Solution

1. Step 1: Write the proportion equation
   144,978 : 222,907 = 222,907 : x
2. Step 2: Convert to fraction form
   144,978/222,907 = 222,907/x
3. Step 3: Cross multiply
   144,978x = 222,907 × 222,907
4. Step 4: Simplify right side
   144,978x = 49,687,530,649
5. Step 5: Solve for x
   x = 49,687,530,649/144,978
6. Step 6: Final answer
   x = 342,724.62