Finding the Third Proportional to 605,978 and 1,275,844

Step by Step Solution

1. Step 1: Write the proportion equation
   605,978 : 1,275,844 = 1,275,844 : x
2. Step 2: Convert to fraction form
   605,978/1,275,844 = 1,275,844/x
3. Step 3: Cross multiply
   605,978x = 1,275,844 × 1,275,844
4. Step 4: Simplify right side
   605,978x = 1,627,777,912,336
5. Step 5: Solve for x
   x = 1,627,777,912,336/605,978
6. Step 6: Final answer
   x = 2,686,199.68