Finding the Third Proportional to 1,289.81 and 3,008.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289.81 : 3,008.53 = 3,008.53 : x
2. Step 2: Convert to fraction form
   1,289.81/3,008.53 = 3,008.53/x
3. Step 3: Cross multiply
   1,289.81x = 3,008.53 × 3,008.53
4. Step 4: Simplify right side
   1,289.81x = 9,051,260.28
5. Step 5: Solve for x
   x = 9,051,260.28/1,289.81
6. Step 6: Final answer
   x = 7,017.50