Finding the Third Proportional to 308,556 and 452,142

Step by Step Solution

1. Step 1: Write the proportion equation
   308,556 : 452,142 = 452,142 : x
2. Step 2: Convert to fraction form
   308,556/452,142 = 452,142/x
3. Step 3: Cross multiply
   308,556x = 452,142 × 452,142
4. Step 4: Simplify right side
   308,556x = 204,432,388,164
5. Step 5: Solve for x
   x = 204,432,388,164/308,556
6. Step 6: Final answer
   x = 662,545.50