Finding the Third Proportional to 746.72 and 1,018.69

Step by Step Solution

1. Step 1: Write the proportion equation
   746.72 : 1,018.69 = 1,018.69 : x
2. Step 2: Convert to fraction form
   746.72/1,018.69 = 1,018.69/x
3. Step 3: Cross multiply
   746.72x = 1,018.69 × 1,018.69
4. Step 4: Simplify right side
   746.72x = 1,037,724.22
5. Step 5: Solve for x
   x = 1,037,724.22/746.72
6. Step 6: Final answer
   x = 1,389.71