Finding the Third Proportional to 13,145.25 and 20,365.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,145.25 : 20,365.88 = 20,365.88 : x
2. Step 2: Convert to fraction form
   13,145.25/20,365.88 = 20,365.88/x
3. Step 3: Cross multiply
   13,145.25x = 20,365.88 × 20,365.88
4. Step 4: Simplify right side
   13,145.25x = 414,768,864.52
5. Step 5: Solve for x
   x = 414,768,864.52/13,145.25
6. Step 6: Final answer
   x = 31,552.76