Finding the Third Proportional to 728,424 and 1,485,738

Step by Step Solution

1. Step 1: Write the proportion equation
   728,424 : 1,485,738 = 1,485,738 : x
2. Step 2: Convert to fraction form
   728,424/1,485,738 = 1,485,738/x
3. Step 3: Cross multiply
   728,424x = 1,485,738 × 1,485,738
4. Step 4: Simplify right side
   728,424x = 2,207,417,404,644
5. Step 5: Solve for x
   x = 2,207,417,404,644/728,424
6. Step 6: Final answer
   x = 3,030,401.81