Finding the Third Proportional to 942.50 and 1,113.50

Step by Step Solution

1. Step 1: Write the proportion equation
   942.50 : 1,113.50 = 1,113.50 : x
2. Step 2: Convert to fraction form
   942.50/1,113.50 = 1,113.50/x
3. Step 3: Cross multiply
   942.50x = 1,113.50 × 1,113.50
4. Step 4: Simplify right side
   942.50x = 1,239,882.25
5. Step 5: Solve for x
   x = 1,239,882.25/942.50
6. Step 6: Final answer
   x = 1,315.52