Finding the Third Proportional to 1,059.75 and 1,170

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.75 : 1,170 = 1,170 : x
2. Step 2: Convert to fraction form
   1,059.75/1,170 = 1,170/x
3. Step 3: Cross multiply
   1,059.75x = 1,170 × 1,170
4. Step 4: Simplify right side
   1,059.75x = 1,368,900
5. Step 5: Solve for x
   x = 1,368,900/1,059.75
6. Step 6: Final answer
   x = 1,291.72