Finding the Third Proportional to 13,896.56 and 20,477.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,896.56 : 20,477.81 = 20,477.81 : x
2. Step 2: Convert to fraction form
   13,896.56/20,477.81 = 20,477.81/x
3. Step 3: Cross multiply
   13,896.56x = 20,477.81 × 20,477.81
4. Step 4: Simplify right side
   13,896.56x = 419,340,804.79
5. Step 5: Solve for x
   x = 419,340,804.79/13,896.56
6. Step 6: Final answer
   x = 30,175.87