Finding the Third Proportional to 142,469 and 221,474.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,469 : 221,474.50 = 221,474.50 : x
2. Step 2: Convert to fraction form
   142,469/221,474.50 = 221,474.50/x
3. Step 3: Cross multiply
   142,469x = 221,474.50 × 221,474.50
4. Step 4: Simplify right side
   142,469x = 49,050,954,150.25
5. Step 5: Solve for x
   x = 49,050,954,150.25/142,469
6. Step 6: Final answer
   x = 344,292.12