Finding the Third Proportional to 117,505.50 and 258,339

Step by Step Solution

1. Step 1: Write the proportion equation
   117,505.50 : 258,339 = 258,339 : x
2. Step 2: Convert to fraction form
   117,505.50/258,339 = 258,339/x
3. Step 3: Cross multiply
   117,505.50x = 258,339 × 258,339
4. Step 4: Simplify right side
   117,505.50x = 66,739,038,921
5. Step 5: Solve for x
   x = 66,739,038,921/117,505.50
6. Step 6: Final answer
   x = 567,965.23