Finding the Third Proportional to 747.94 and 1,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   747.94 : 1,015.50 = 1,015.50 : x
2. Step 2: Convert to fraction form
   747.94/1,015.50 = 1,015.50/x
3. Step 3: Cross multiply
   747.94x = 1,015.50 × 1,015.50
4. Step 4: Simplify right side
   747.94x = 1,031,240.25
5. Step 5: Solve for x
   x = 1,031,240.25/747.94
6. Step 6: Final answer
   x = 1,378.78