Finding the Third Proportional to 1,428,672 and 3,143,040

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428,672 : 3,143,040 = 3,143,040 : x
2. Step 2: Convert to fraction form
   1,428,672/3,143,040 = 3,143,040/x
3. Step 3: Cross multiply
   1,428,672x = 3,143,040 × 3,143,040
4. Step 4: Simplify right side
   1,428,672x = 9,878,700,441,600
5. Step 5: Solve for x
   x = 9,878,700,441,600/1,428,672
6. Step 6: Final answer
   x = 6,914,603.52