Finding the Third Proportional to 3,688.03 and 7,991.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,688.03 : 7,991.16 = 7,991.16 : x
2. Step 2: Convert to fraction form
   3,688.03/7,991.16 = 7,991.16/x
3. Step 3: Cross multiply
   3,688.03x = 7,991.16 × 7,991.16
4. Step 4: Simplify right side
   3,688.03x = 63,858,578.21
5. Step 5: Solve for x
   x = 63,858,578.21/3,688.03
6. Step 6: Final answer
   x = 17,315.09