Finding the Third Proportional to 113,359.50 and 172,287

Step by Step Solution

1. Step 1: Write the proportion equation
   113,359.50 : 172,287 = 172,287 : x
2. Step 2: Convert to fraction form
   113,359.50/172,287 = 172,287/x
3. Step 3: Cross multiply
   113,359.50x = 172,287 × 172,287
4. Step 4: Simplify right side
   113,359.50x = 29,682,810,369
5. Step 5: Solve for x
   x = 29,682,810,369/113,359.50
6. Step 6: Final answer
   x = 261,846.69