Finding the Third Proportional to 142,715 and 222,243

Step by Step Solution

1. Step 1: Write the proportion equation
   142,715 : 222,243 = 222,243 : x
2. Step 2: Convert to fraction form
   142,715/222,243 = 222,243/x
3. Step 3: Cross multiply
   142,715x = 222,243 × 222,243
4. Step 4: Simplify right side
   142,715x = 49,391,951,049
5. Step 5: Solve for x
   x = 49,391,951,049/142,715
6. Step 6: Final answer
   x = 346,088.01