Finding the Third Proportional to 13,404 and 21,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,404 : 21,256.50 = 21,256.50 : x
2. Step 2: Convert to fraction form
   13,404/21,256.50 = 21,256.50/x
3. Step 3: Cross multiply
   13,404x = 21,256.50 × 21,256.50
4. Step 4: Simplify right side
   13,404x = 451,838,792.25
5. Step 5: Solve for x
   x = 451,838,792.25/13,404
6. Step 6: Final answer
   x = 33,709.25