Finding the Third Proportional to 113,998.50 and 170,359.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,998.50 : 170,359.50 = 170,359.50 : x
2. Step 2: Convert to fraction form
   113,998.50/170,359.50 = 170,359.50/x
3. Step 3: Cross multiply
   113,998.50x = 170,359.50 × 170,359.50
4. Step 4: Simplify right side
   113,998.50x = 29,022,359,240.25
5. Step 5: Solve for x
   x = 29,022,359,240.25/113,998.50
6. Step 6: Final answer
   x = 254,585.45