Finding the Third Proportional to 259,139.25 and 566,149.50

Step by Step Solution

1. Step 1: Write the proportion equation
   259,139.25 : 566,149.50 = 566,149.50 : x
2. Step 2: Convert to fraction form
   259,139.25/566,149.50 = 566,149.50/x
3. Step 3: Cross multiply
   259,139.25x = 566,149.50 × 566,149.50
4. Step 4: Simplify right side
   259,139.25x = 320,525,256,350.25
5. Step 5: Solve for x
   x = 320,525,256,350.25/259,139.25
6. Step 6: Final answer
   x = 1,236,884.25