Finding the Third Proportional to 161,986 and 239,788.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,986 : 239,788.50 = 239,788.50 : x
2. Step 2: Convert to fraction form
   161,986/239,788.50 = 239,788.50/x
3. Step 3: Cross multiply
   161,986x = 239,788.50 × 239,788.50
4. Step 4: Simplify right side
   161,986x = 57,498,524,732.25
5. Step 5: Solve for x
   x = 57,498,524,732.25/161,986
6. Step 6: Final answer
   x = 354,959.84