Finding the Third Proportional to 443,187.75 and 728,118

Step by Step Solution

1. Step 1: Write the proportion equation
   443,187.75 : 728,118 = 728,118 : x
2. Step 2: Convert to fraction form
   443,187.75/728,118 = 728,118/x
3. Step 3: Cross multiply
   443,187.75x = 728,118 × 728,118
4. Step 4: Simplify right side
   443,187.75x = 530,155,821,924
5. Step 5: Solve for x
   x = 530,155,821,924/443,187.75
6. Step 6: Final answer
   x = 1,196,233.02