Finding the Third Proportional to 1,288.13 and 3,009.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.13 : 3,009.38 = 3,009.38 : x
2. Step 2: Convert to fraction form
   1,288.13/3,009.38 = 3,009.38/x
3. Step 3: Cross multiply
   1,288.13x = 3,009.38 × 3,009.38
4. Step 4: Simplify right side
   1,288.13x = 9,056,337.89
5. Step 5: Solve for x
   x = 9,056,337.89/1,288.13
6. Step 6: Final answer
   x = 7,030.64