Finding the Third Proportional to 116,785.50 and 255,380

Step by Step Solution

1. Step 1: Write the proportion equation
   116,785.50 : 255,380 = 255,380 : x
2. Step 2: Convert to fraction form
   116,785.50/255,380 = 255,380/x
3. Step 3: Cross multiply
   116,785.50x = 255,380 × 255,380
4. Step 4: Simplify right side
   116,785.50x = 65,218,944,400
5. Step 5: Solve for x
   x = 65,218,944,400/116,785.50
6. Step 6: Final answer
   x = 558,450.70