Finding the Third Proportional to 778,208 and 1,428,544

Step by Step Solution

1. Step 1: Write the proportion equation
   778,208 : 1,428,544 = 1,428,544 : x
2. Step 2: Convert to fraction form
   778,208/1,428,544 = 1,428,544/x
3. Step 3: Cross multiply
   778,208x = 1,428,544 × 1,428,544
4. Step 4: Simplify right side
   778,208x = 2,040,737,959,936
5. Step 5: Solve for x
   x = 2,040,737,959,936/778,208
6. Step 6: Final answer
   x = 2,622,355.41