Finding the Third Proportional to 72,231.75 and 174,018.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,231.75 : 174,018.38 = 174,018.38 : x
2. Step 2: Convert to fraction form
   72,231.75/174,018.38 = 174,018.38/x
3. Step 3: Cross multiply
   72,231.75x = 174,018.38 × 174,018.38
4. Step 4: Simplify right side
   72,231.75x = 30,282,394,837.64
5. Step 5: Solve for x
   x = 30,282,394,837.64/72,231.75
6. Step 6: Final answer
   x = 419,239.39