Finding the Third Proportional to 8,672 and 12,392

Step by Step Solution

1. Step 1: Write the proportion equation
   8,672 : 12,392 = 12,392 : x
2. Step 2: Convert to fraction form
   8,672/12,392 = 12,392/x
3. Step 3: Cross multiply
   8,672x = 12,392 × 12,392
4. Step 4: Simplify right side
   8,672x = 153,561,664
5. Step 5: Solve for x
   x = 153,561,664/8,672
6. Step 6: Final answer
   x = 17,707.76