Finding the Third Proportional to 670.50 and 1,116

Step by Step Solution

1. Step 1: Write the proportion equation
   670.50 : 1,116 = 1,116 : x
2. Step 2: Convert to fraction form
   670.50/1,116 = 1,116/x
3. Step 3: Cross multiply
   670.50x = 1,116 × 1,116
4. Step 4: Simplify right side
   670.50x = 1,245,456
5. Step 5: Solve for x
   x = 1,245,456/670.50
6. Step 6: Final answer
   x = 1,857.50