Finding the Third Proportional to 117,247.50 and 256,554

Step by Step Solution

1. Step 1: Write the proportion equation
   117,247.50 : 256,554 = 256,554 : x
2. Step 2: Convert to fraction form
   117,247.50/256,554 = 256,554/x
3. Step 3: Cross multiply
   117,247.50x = 256,554 × 256,554
4. Step 4: Simplify right side
   117,247.50x = 65,819,954,916
5. Step 5: Solve for x
   x = 65,819,954,916/117,247.50
6. Step 6: Final answer
   x = 561,376.19