Finding the Third Proportional to 118,290 and 259,481.25

Step by Step Solution

1. Step 1: Write the proportion equation
   118,290 : 259,481.25 = 259,481.25 : x
2. Step 2: Convert to fraction form
   118,290/259,481.25 = 259,481.25/x
3. Step 3: Cross multiply
   118,290x = 259,481.25 × 259,481.25
4. Step 4: Simplify right side
   118,290x = 67,330,519,101.56
5. Step 5: Solve for x
   x = 67,330,519,101.56/118,290
6. Step 6: Final answer
   x = 569,198.74