Finding the Third Proportional to 172,168 and 251,404

Step by Step Solution

1. Step 1: Write the proportion equation
   172,168 : 251,404 = 251,404 : x
2. Step 2: Convert to fraction form
   172,168/251,404 = 251,404/x
3. Step 3: Cross multiply
   172,168x = 251,404 × 251,404
4. Step 4: Simplify right side
   172,168x = 63,203,971,216
5. Step 5: Solve for x
   x = 63,203,971,216/172,168
6. Step 6: Final answer
   x = 367,106.38