Finding the Third Proportional to 12,354 and 17,691

Step by Step Solution

1. Step 1: Write the proportion equation
   12,354 : 17,691 = 17,691 : x
2. Step 2: Convert to fraction form
   12,354/17,691 = 17,691/x
3. Step 3: Cross multiply
   12,354x = 17,691 × 17,691
4. Step 4: Simplify right side
   12,354x = 312,971,481
5. Step 5: Solve for x
   x = 312,971,481/12,354
6. Step 6: Final answer
   x = 25,333.62