Finding the Third Proportional to 12,993.75 and 20,111.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,993.75 : 20,111.63 = 20,111.63 : x
2. Step 2: Convert to fraction form
   12,993.75/20,111.63 = 20,111.63/x
3. Step 3: Cross multiply
   12,993.75x = 20,111.63 × 20,111.63
4. Step 4: Simplify right side
   12,993.75x = 404,477,460.14
5. Step 5: Solve for x
   x = 404,477,460.14/12,993.75
6. Step 6: Final answer
   x = 31,128.62