Finding the Third Proportional to 3,812.91 and 8,111.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,812.91 : 8,111.81 = 8,111.81 : x
2. Step 2: Convert to fraction form
   3,812.91/8,111.81 = 8,111.81/x
3. Step 3: Cross multiply
   3,812.91x = 8,111.81 × 8,111.81
4. Step 4: Simplify right side
   3,812.91x = 65,801,502.04
5. Step 5: Solve for x
   x = 65,801,502.04/3,812.91
6. Step 6: Final answer
   x = 17,257.57