Finding the Third Proportional to 8,117.72 and 13,338.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,117.72 : 13,338.42 = 13,338.42 : x
2. Step 2: Convert to fraction form
   8,117.72/13,338.42 = 13,338.42/x
3. Step 3: Cross multiply
   8,117.72x = 13,338.42 × 13,338.42
4. Step 4: Simplify right side
   8,117.72x = 177,913,498.12
5. Step 5: Solve for x
   x = 177,913,498.12/8,117.72
6. Step 6: Final answer
   x = 21,916.69