Finding the Third Proportional to 728,448 and 1,485,800

Step by Step Solution

1. Step 1: Write the proportion equation
   728,448 : 1,485,800 = 1,485,800 : x
2. Step 2: Convert to fraction form
   728,448/1,485,800 = 1,485,800/x
3. Step 3: Cross multiply
   728,448x = 1,485,800 × 1,485,800
4. Step 4: Simplify right side
   728,448x = 2,207,601,640,000
5. Step 5: Solve for x
   x = 2,207,601,640,000/728,448
6. Step 6: Final answer
   x = 3,030,554.88