Finding the Third Proportional to 663,816 and 1,424,408

Step by Step Solution

1. Step 1: Write the proportion equation
   663,816 : 1,424,408 = 1,424,408 : x
2. Step 2: Convert to fraction form
   663,816/1,424,408 = 1,424,408/x
3. Step 3: Cross multiply
   663,816x = 1,424,408 × 1,424,408
4. Step 4: Simplify right side
   663,816x = 2,028,938,150,464
5. Step 5: Solve for x
   x = 2,028,938,150,464/663,816
6. Step 6: Final answer
   x = 3,056,476.72