Finding the Third Proportional to 13,150.75 and 20,400.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.75 : 20,400.38 = 20,400.38 : x
2. Step 2: Convert to fraction form
   13,150.75/20,400.38 = 20,400.38/x
3. Step 3: Cross multiply
   13,150.75x = 20,400.38 × 20,400.38
4. Step 4: Simplify right side
   13,150.75x = 416,175,300.14
5. Step 5: Solve for x
   x = 416,175,300.14/13,150.75
6. Step 6: Final answer
   x = 31,646.51