Finding the Third Proportional to 949.88 and 1,290.56

Step by Step Solution

1. Step 1: Write the proportion equation
   949.88 : 1,290.56 = 1,290.56 : x
2. Step 2: Convert to fraction form
   949.88/1,290.56 = 1,290.56/x
3. Step 3: Cross multiply
   949.88x = 1,290.56 × 1,290.56
4. Step 4: Simplify right side
   949.88x = 1,665,551.57
5. Step 5: Solve for x
   x = 1,665,551.57/949.88
6. Step 6: Final answer
   x = 1,753.44