Finding the Third Proportional to 1,288.69 and 1,938.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.69 : 1,938.09 = 1,938.09 : x
2. Step 2: Convert to fraction form
   1,288.69/1,938.09 = 1,938.09/x
3. Step 3: Cross multiply
   1,288.69x = 1,938.09 × 1,938.09
4. Step 4: Simplify right side
   1,288.69x = 3,756,207.38
5. Step 5: Solve for x
   x = 3,756,207.38/1,288.69
6. Step 6: Final answer
   x = 2,914.75