Finding the Third Proportional to 111,088 and 172,060

Step by Step Solution

1. Step 1: Write the proportion equation
   111,088 : 172,060 = 172,060 : x
2. Step 2: Convert to fraction form
   111,088/172,060 = 172,060/x
3. Step 3: Cross multiply
   111,088x = 172,060 × 172,060
4. Step 4: Simplify right side
   111,088x = 29,604,643,600
5. Step 5: Solve for x
   x = 29,604,643,600/111,088
6. Step 6: Final answer
   x = 266,497.22