Finding the Third Proportional to 2,156.50 and 3,340.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.50 : 3,340.38 = 3,340.38 : x
2. Step 2: Convert to fraction form
   2,156.50/3,340.38 = 3,340.38/x
3. Step 3: Cross multiply
   2,156.50x = 3,340.38 × 3,340.38
4. Step 4: Simplify right side
   2,156.50x = 11,158,105.14
5. Step 5: Solve for x
   x = 11,158,105.14/2,156.50
6. Step 6: Final answer
   x = 5,174.17