Finding the Third Proportional to 443,222 and 728,166

Step by Step Solution

1. Step 1: Write the proportion equation
   443,222 : 728,166 = 728,166 : x
2. Step 2: Convert to fraction form
   443,222/728,166 = 728,166/x
3. Step 3: Cross multiply
   443,222x = 728,166 × 728,166
4. Step 4: Simplify right side
   443,222x = 530,225,723,556
5. Step 5: Solve for x
   x = 530,225,723,556/443,222
6. Step 6: Final answer
   x = 1,196,298.30