Finding the Third Proportional to 118,188 and 259,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,188 : 259,339.50 = 259,339.50 : x
2. Step 2: Convert to fraction form
   118,188/259,339.50 = 259,339.50/x
3. Step 3: Cross multiply
   118,188x = 259,339.50 × 259,339.50
4. Step 4: Simplify right side
   118,188x = 67,256,976,260.25
5. Step 5: Solve for x
   x = 67,256,976,260.25/118,188
6. Step 6: Final answer
   x = 569,067.72