Finding the Third Proportional to 779,298 and 1,678,980

Step by Step Solution

1. Step 1: Write the proportion equation
   779,298 : 1,678,980 = 1,678,980 : x
2. Step 2: Convert to fraction form
   779,298/1,678,980 = 1,678,980/x
3. Step 3: Cross multiply
   779,298x = 1,678,980 × 1,678,980
4. Step 4: Simplify right side
   779,298x = 2,818,973,840,400
5. Step 5: Solve for x
   x = 2,818,973,840,400/779,298
6. Step 6: Final answer
   x = 3,617,324.62