Finding the Third Proportional to 117,588.75 and 258,588

Step by Step Solution

1. Step 1: Write the proportion equation
   117,588.75 : 258,588 = 258,588 : x
2. Step 2: Convert to fraction form
   117,588.75/258,588 = 258,588/x
3. Step 3: Cross multiply
   117,588.75x = 258,588 × 258,588
4. Step 4: Simplify right side
   117,588.75x = 66,867,753,744
5. Step 5: Solve for x
   x = 66,867,753,744/117,588.75
6. Step 6: Final answer
   x = 568,657.75