Finding the Third Proportional to 111,359.50 and 172,383

Step by Step Solution

1. Step 1: Write the proportion equation
   111,359.50 : 172,383 = 172,383 : x
2. Step 2: Convert to fraction form
   111,359.50/172,383 = 172,383/x
3. Step 3: Cross multiply
   111,359.50x = 172,383 × 172,383
4. Step 4: Simplify right side
   111,359.50x = 29,715,898,689
5. Step 5: Solve for x
   x = 29,715,898,689/111,359.50
6. Step 6: Final answer
   x = 266,846.55