Finding the Third Proportional to 13,444.50 and 19,680

Step by Step Solution

1. Step 1: Write the proportion equation
   13,444.50 : 19,680 = 19,680 : x
2. Step 2: Convert to fraction form
   13,444.50/19,680 = 19,680/x
3. Step 3: Cross multiply
   13,444.50x = 19,680 × 19,680
4. Step 4: Simplify right side
   13,444.50x = 387,302,400
5. Step 5: Solve for x
   x = 387,302,400/13,444.50
6. Step 6: Final answer
   x = 28,807.50