Finding the Third Proportional to 111,079 and 172,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,079 : 172,045.50 = 172,045.50 : x
2. Step 2: Convert to fraction form
   111,079/172,045.50 = 172,045.50/x
3. Step 3: Cross multiply
   111,079x = 172,045.50 × 172,045.50
4. Step 4: Simplify right side
   111,079x = 29,599,654,070.25
5. Step 5: Solve for x
   x = 29,599,654,070.25/111,079
6. Step 6: Final answer
   x = 266,473.90