Finding the Third Proportional to 158,956 and 222,790

Step by Step Solution

1. Step 1: Write the proportion equation
   158,956 : 222,790 = 222,790 : x
2. Step 2: Convert to fraction form
   158,956/222,790 = 222,790/x
3. Step 3: Cross multiply
   158,956x = 222,790 × 222,790
4. Step 4: Simplify right side
   158,956x = 49,635,384,100
5. Step 5: Solve for x
   x = 49,635,384,100/158,956
6. Step 6: Final answer
   x = 312,258.64