Finding the Third Proportional to 244,570 and 321,608

Step by Step Solution

1. Step 1: Write the proportion equation
   244,570 : 321,608 = 321,608 : x
2. Step 2: Convert to fraction form
   244,570/321,608 = 321,608/x
3. Step 3: Cross multiply
   244,570x = 321,608 × 321,608
4. Step 4: Simplify right side
   244,570x = 103,431,705,664
5. Step 5: Solve for x
   x = 103,431,705,664/244,570
6. Step 6: Final answer
   x = 422,912.48