Finding the Third Proportional to 5,540.06 and 10,386.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,540.06 : 10,386.56 = 10,386.56 : x
2. Step 2: Convert to fraction form
   5,540.06/10,386.56 = 10,386.56/x
3. Step 3: Cross multiply
   5,540.06x = 10,386.56 × 10,386.56
4. Step 4: Simplify right side
   5,540.06x = 107,880,680.57
5. Step 5: Solve for x
   x = 107,880,680.57/5,540.06
6. Step 6: Final answer
   x = 19,472.83