Finding the Third Proportional to 142,722 and 222,254

Step by Step Solution

1. Step 1: Write the proportion equation
   142,722 : 222,254 = 222,254 : x
2. Step 2: Convert to fraction form
   142,722/222,254 = 222,254/x
3. Step 3: Cross multiply
   142,722x = 222,254 × 222,254
4. Step 4: Simplify right side
   142,722x = 49,396,840,516
5. Step 5: Solve for x
   x = 49,396,840,516/142,722
6. Step 6: Final answer
   x = 346,105.30