Finding the Third Proportional to 142,725 and 222,258

Step by Step Solution

1. Step 1: Write the proportion equation
   142,725 : 222,258 = 222,258 : x
2. Step 2: Convert to fraction form
   142,725/222,258 = 222,258/x
3. Step 3: Cross multiply
   142,725x = 222,258 × 222,258
4. Step 4: Simplify right side
   142,725x = 49,398,618,564
5. Step 5: Solve for x
   x = 49,398,618,564/142,725
6. Step 6: Final answer
   x = 346,110.48