Finding the Third Proportional to 117,940.50 and 256,617

Step by Step Solution

1. Step 1: Write the proportion equation
   117,940.50 : 256,617 = 256,617 : x
2. Step 2: Convert to fraction form
   117,940.50/256,617 = 256,617/x
3. Step 3: Cross multiply
   117,940.50x = 256,617 × 256,617
4. Step 4: Simplify right side
   117,940.50x = 65,852,284,689
5. Step 5: Solve for x
   x = 65,852,284,689/117,940.50
6. Step 6: Final answer
   x = 558,351.75