Finding the Third Proportional to 172,000 and 259,008

Step by Step Solution

1. Step 1: Write the proportion equation
   172,000 : 259,008 = 259,008 : x
2. Step 2: Convert to fraction form
   172,000/259,008 = 259,008/x
3. Step 3: Cross multiply
   172,000x = 259,008 × 259,008
4. Step 4: Simplify right side
   172,000x = 67,085,144,064
5. Step 5: Solve for x
   x = 67,085,144,064/172,000
6. Step 6: Final answer
   x = 390,029.91