Finding the Third Proportional to 142,462 and 221,463.75

Step by Step Solution

1. Step 1: Write the proportion equation
   142,462 : 221,463.75 = 221,463.75 : x
2. Step 2: Convert to fraction form
   142,462/221,463.75 = 221,463.75/x
3. Step 3: Cross multiply
   142,462x = 221,463.75 × 221,463.75
4. Step 4: Simplify right side
   142,462x = 49,046,192,564.06
5. Step 5: Solve for x
   x = 49,046,192,564.06/142,462
6. Step 6: Final answer
   x = 344,275.61