Finding the Third Proportional to 12,408 and 17,356.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,408 : 17,356.50 = 17,356.50 : x
2. Step 2: Convert to fraction form
   12,408/17,356.50 = 17,356.50/x
3. Step 3: Cross multiply
   12,408x = 17,356.50 × 17,356.50
4. Step 4: Simplify right side
   12,408x = 301,248,092.25
5. Step 5: Solve for x
   x = 301,248,092.25/12,408
6. Step 6: Final answer
   x = 24,278.54