Finding the Third Proportional to 634,408 and 1,428,516

Step by Step Solution

1. Step 1: Write the proportion equation
   634,408 : 1,428,516 = 1,428,516 : x
2. Step 2: Convert to fraction form
   634,408/1,428,516 = 1,428,516/x
3. Step 3: Cross multiply
   634,408x = 1,428,516 × 1,428,516
4. Step 4: Simplify right side
   634,408x = 2,040,657,962,256
5. Step 5: Solve for x
   x = 2,040,657,962,256/634,408
6. Step 6: Final answer
   x = 3,216,633.40