Finding the Third Proportional to 743 and 1,061.25

Step by Step Solution

1. Step 1: Write the proportion equation
   743 : 1,061.25 = 1,061.25 : x
2. Step 2: Convert to fraction form
   743/1,061.25 = 1,061.25/x
3. Step 3: Cross multiply
   743x = 1,061.25 × 1,061.25
4. Step 4: Simplify right side
   743x = 1,126,251.56
5. Step 5: Solve for x
   x = 1,126,251.56/743
6. Step 6: Final answer
   x = 1,515.82