Finding the Third Proportional to 144,838.50 and 221,568

Step by Step Solution

1. Step 1: Write the proportion equation
   144,838.50 : 221,568 = 221,568 : x
2. Step 2: Convert to fraction form
   144,838.50/221,568 = 221,568/x
3. Step 3: Cross multiply
   144,838.50x = 221,568 × 221,568
4. Step 4: Simplify right side
   144,838.50x = 49,092,378,624
5. Step 5: Solve for x
   x = 49,092,378,624/144,838.50
6. Step 6: Final answer
   x = 338,945.64