Finding the Third Proportional to 13,587.75 and 19,811.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,587.75 : 19,811.25 = 19,811.25 : x
2. Step 2: Convert to fraction form
   13,587.75/19,811.25 = 19,811.25/x
3. Step 3: Cross multiply
   13,587.75x = 19,811.25 × 19,811.25
4. Step 4: Simplify right side
   13,587.75x = 392,485,626.56
5. Step 5: Solve for x
   x = 392,485,626.56/13,587.75
6. Step 6: Final answer
   x = 28,885.26