Finding the Third Proportional to 79,929 and 172,323

Step by Step Solution

1. Step 1: Write the proportion equation
   79,929 : 172,323 = 172,323 : x
2. Step 2: Convert to fraction form
   79,929/172,323 = 172,323/x
3. Step 3: Cross multiply
   79,929x = 172,323 × 172,323
4. Step 4: Simplify right side
   79,929x = 29,695,216,329
5. Step 5: Solve for x
   x = 29,695,216,329/79,929
6. Step 6: Final answer
   x = 371,519.93