Finding the Third Proportional to 387,771 and 582,067.50

Step by Step Solution

1. Step 1: Write the proportion equation
   387,771 : 582,067.50 = 582,067.50 : x
2. Step 2: Convert to fraction form
   387,771/582,067.50 = 582,067.50/x
3. Step 3: Cross multiply
   387,771x = 582,067.50 × 582,067.50
4. Step 4: Simplify right side
   387,771x = 338,802,574,556.25
5. Step 5: Solve for x
   x = 338,802,574,556.25/387,771
6. Step 6: Final answer
   x = 873,718.19