Finding the Third Proportional to 668,872 and 1,428,464

Step by Step Solution

1. Step 1: Write the proportion equation
   668,872 : 1,428,464 = 1,428,464 : x
2. Step 2: Convert to fraction form
   668,872/1,428,464 = 1,428,464/x
3. Step 3: Cross multiply
   668,872x = 1,428,464 × 1,428,464
4. Step 4: Simplify right side
   668,872x = 2,040,509,399,296
5. Step 5: Solve for x
   x = 2,040,509,399,296/668,872
6. Step 6: Final answer
   x = 3,050,672.47