Finding the Third Proportional to 12,400.38 and 18,712.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,400.38 : 18,712.37 = 18,712.37 : x
2. Step 2: Convert to fraction form
   12,400.38/18,712.37 = 18,712.37/x
3. Step 3: Cross multiply
   12,400.38x = 18,712.37 × 18,712.37
4. Step 4: Simplify right side
   12,400.38x = 350,152,831.95
5. Step 5: Solve for x
   x = 350,152,831.95/12,400.38
6. Step 6: Final answer
   x = 28,237.26