Finding the Third Proportional to 72,719 and 154,228

Step by Step Solution

1. Step 1: Write the proportion equation
   72,719 : 154,228 = 154,228 : x
2. Step 2: Convert to fraction form
   72,719/154,228 = 154,228/x
3. Step 3: Cross multiply
   72,719x = 154,228 × 154,228
4. Step 4: Simplify right side
   72,719x = 23,786,275,984
5. Step 5: Solve for x
   x = 23,786,275,984/72,719
6. Step 6: Final answer
   x = 327,098.50