Finding the Third Proportional to 668,779 and 1,442,047

Step by Step Solution

1. Step 1: Write the proportion equation
   668,779 : 1,442,047 = 1,442,047 : x
2. Step 2: Convert to fraction form
   668,779/1,442,047 = 1,442,047/x
3. Step 3: Cross multiply
   668,779x = 1,442,047 × 1,442,047
4. Step 4: Simplify right side
   668,779x = 2,079,499,550,209
5. Step 5: Solve for x
   x = 2,079,499,550,209/668,779
6. Step 6: Final answer
   x = 3,109,397.20