Finding the Third Proportional to 557,828 and 1,222,144

Step by Step Solution

1. Step 1: Write the proportion equation
   557,828 : 1,222,144 = 1,222,144 : x
2. Step 2: Convert to fraction form
   557,828/1,222,144 = 1,222,144/x
3. Step 3: Cross multiply
   557,828x = 1,222,144 × 1,222,144
4. Step 4: Simplify right side
   557,828x = 1,493,635,956,736
5. Step 5: Solve for x
   x = 1,493,635,956,736/557,828
6. Step 6: Final answer
   x = 2,677,592.30