Finding the Third Proportional to 668,844 and 1,428,408

Step by Step Solution

1. Step 1: Write the proportion equation
   668,844 : 1,428,408 = 1,428,408 : x
2. Step 2: Convert to fraction form
   668,844/1,428,408 = 1,428,408/x
3. Step 3: Cross multiply
   668,844x = 1,428,408 × 1,428,408
4. Step 4: Simplify right side
   668,844x = 2,040,349,414,464
5. Step 5: Solve for x
   x = 2,040,349,414,464/668,844
6. Step 6: Final answer
   x = 3,050,560.99