Finding the Third Proportional to 269,883 and 396,067.50

Step by Step Solution

1. Step 1: Write the proportion equation
   269,883 : 396,067.50 = 396,067.50 : x
2. Step 2: Convert to fraction form
   269,883/396,067.50 = 396,067.50/x
3. Step 3: Cross multiply
   269,883x = 396,067.50 × 396,067.50
4. Step 4: Simplify right side
   269,883x = 156,869,464,556.25
5. Step 5: Solve for x
   x = 156,869,464,556.25/269,883
6. Step 6: Final answer
   x = 581,249.89