Finding the Third Proportional to 118,960.50 and 256,491

Step by Step Solution

1. Step 1: Write the proportion equation
   118,960.50 : 256,491 = 256,491 : x
2. Step 2: Convert to fraction form
   118,960.50/256,491 = 256,491/x
3. Step 3: Cross multiply
   118,960.50x = 256,491 × 256,491
4. Step 4: Simplify right side
   118,960.50x = 65,787,633,081
5. Step 5: Solve for x
   x = 65,787,633,081/118,960.50
6. Step 6: Final answer
   x = 553,020.82