Finding the Third Proportional to 111,089.50 and 172,062

Step by Step Solution

1. Step 1: Write the proportion equation
   111,089.50 : 172,062 = 172,062 : x
2. Step 2: Convert to fraction form
   111,089.50/172,062 = 172,062/x
3. Step 3: Cross multiply
   111,089.50x = 172,062 × 172,062
4. Step 4: Simplify right side
   111,089.50x = 29,605,331,844
5. Step 5: Solve for x
   x = 29,605,331,844/111,089.50
6. Step 6: Final answer
   x = 266,499.82