Finding the Third Proportional to 13,993.38 and 30,831.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,993.38 : 30,831.57 = 30,831.57 : x
2. Step 2: Convert to fraction form
   13,993.38/30,831.57 = 30,831.57/x
3. Step 3: Cross multiply
   13,993.38x = 30,831.57 × 30,831.57
4. Step 4: Simplify right side
   13,993.38x = 950,585,968.81
5. Step 5: Solve for x
   x = 950,585,968.81/13,993.38
6. Step 6: Final answer
   x = 67,931.11