Finding the Third Proportional to 728,408 and 1,485,706

Step by Step Solution

1. Step 1: Write the proportion equation
   728,408 : 1,485,706 = 1,485,706 : x
2. Step 2: Convert to fraction form
   728,408/1,485,706 = 1,485,706/x
3. Step 3: Cross multiply
   728,408x = 1,485,706 × 1,485,706
4. Step 4: Simplify right side
   728,408x = 2,207,322,318,436
5. Step 5: Solve for x
   x = 2,207,322,318,436/728,408
6. Step 6: Final answer
   x = 3,030,337.83