Finding the Third Proportional to 3,945.38 and 8,618.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.38 : 8,618.06 = 8,618.06 : x
2. Step 2: Convert to fraction form
   3,945.38/8,618.06 = 8,618.06/x
3. Step 3: Cross multiply
   3,945.38x = 8,618.06 × 8,618.06
4. Step 4: Simplify right side
   3,945.38x = 74,271,001.25
5. Step 5: Solve for x
   x = 74,271,001.25/3,945.38
6. Step 6: Final answer
   x = 18,824.83