Finding the Third Proportional to 116,863.50 and 255,840

Step by Step Solution

1. Step 1: Write the proportion equation
   116,863.50 : 255,840 = 255,840 : x
2. Step 2: Convert to fraction form
   116,863.50/255,840 = 255,840/x
3. Step 3: Cross multiply
   116,863.50x = 255,840 × 255,840
4. Step 4: Simplify right side
   116,863.50x = 65,454,105,600
5. Step 5: Solve for x
   x = 65,454,105,600/116,863.50
6. Step 6: Final answer
   x = 560,090.24