Finding the Third Proportional to 3,906.98 and 8,555.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.98 : 8,555.07 = 8,555.07 : x
2. Step 2: Convert to fraction form
   3,906.98/8,555.07 = 8,555.07/x
3. Step 3: Cross multiply
   3,906.98x = 8,555.07 × 8,555.07
4. Step 4: Simplify right side
   3,906.98x = 73,189,244.76
5. Step 5: Solve for x
   x = 73,189,244.76/3,906.98
6. Step 6: Final answer
   x = 18,732.92