Finding the Third Proportional to 1,095 and 1,318.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095 : 1,318.50 = 1,318.50 : x
2. Step 2: Convert to fraction form
   1,095/1,318.50 = 1,318.50/x
3. Step 3: Cross multiply
   1,095x = 1,318.50 × 1,318.50
4. Step 4: Simplify right side
   1,095x = 1,738,442.25
5. Step 5: Solve for x
   x = 1,738,442.25/1,095
6. Step 6: Final answer
   x = 1,587.62