Finding the Third Proportional to 142,608 and 221,800

Step by Step Solution

1. Step 1: Write the proportion equation
   142,608 : 221,800 = 221,800 : x
2. Step 2: Convert to fraction form
   142,608/221,800 = 221,800/x
3. Step 3: Cross multiply
   142,608x = 221,800 × 221,800
4. Step 4: Simplify right side
   142,608x = 49,195,240,000
5. Step 5: Solve for x
   x = 49,195,240,000/142,608
6. Step 6: Final answer
   x = 344,968.30