Finding the Third Proportional to 13,481.72 and 20,411.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,481.72 : 20,411.16 = 20,411.16 : x
2. Step 2: Convert to fraction form
   13,481.72/20,411.16 = 20,411.16/x
3. Step 3: Cross multiply
   13,481.72x = 20,411.16 × 20,411.16
4. Step 4: Simplify right side
   13,481.72x = 416,615,299.46
5. Step 5: Solve for x
   x = 416,615,299.46/13,481.72
6. Step 6: Final answer
   x = 30,902.24