Finding the Third Proportional to 2,137.50 and 3,315.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.50 : 3,315.38 = 3,315.38 : x
2. Step 2: Convert to fraction form
   2,137.50/3,315.38 = 3,315.38/x
3. Step 3: Cross multiply
   2,137.50x = 3,315.38 × 3,315.38
4. Step 4: Simplify right side
   2,137.50x = 10,991,711.39
5. Step 5: Solve for x
   x = 10,991,711.39/2,137.50
6. Step 6: Final answer
   x = 5,142.32