Finding the Third Proportional to 3,983.63 and 8,665.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,983.63 : 8,665.88 = 8,665.88 : x
2. Step 2: Convert to fraction form
   3,983.63/8,665.88 = 8,665.88/x
3. Step 3: Cross multiply
   3,983.63x = 8,665.88 × 8,665.88
4. Step 4: Simplify right side
   3,983.63x = 75,097,389.52
5. Step 5: Solve for x
   x = 75,097,389.52/3,983.63
6. Step 6: Final answer
   x = 18,851.52