Finding the Third Proportional to 12,992.63 and 20,127.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,992.63 : 20,127.38 = 20,127.38 : x
2. Step 2: Convert to fraction form
   12,992.63/20,127.38 = 20,127.38/x
3. Step 3: Cross multiply
   12,992.63x = 20,127.38 × 20,127.38
4. Step 4: Simplify right side
   12,992.63x = 405,111,224.39
5. Step 5: Solve for x
   x = 405,111,224.39/12,992.63
6. Step 6: Final answer
   x = 31,180.09