Finding the Third Proportional to 118,146.09 and 259,255.69

Step by Step Solution

1. Step 1: Write the proportion equation
   118,146.09 : 259,255.69 = 259,255.69 : x
2. Step 2: Convert to fraction form
   118,146.09/259,255.69 = 259,255.69/x
3. Step 3: Cross multiply
   118,146.09x = 259,255.69 × 259,255.69
4. Step 4: Simplify right side
   118,146.09x = 67,213,511,501.10
5. Step 5: Solve for x
   x = 67,213,511,501.10/118,146.09
6. Step 6: Final answer
   x = 568,901.68