Finding the Third Proportional to 8,333.81 and 12,171.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,333.81 : 12,171.56 = 12,171.56 : x
2. Step 2: Convert to fraction form
   8,333.81/12,171.56 = 12,171.56/x
3. Step 3: Cross multiply
   8,333.81x = 12,171.56 × 12,171.56
4. Step 4: Simplify right side
   8,333.81x = 148,146,933.69
5. Step 5: Solve for x
   x = 148,146,933.69/8,333.81
6. Step 6: Final answer
   x = 17,776.61