Finding the Third Proportional to 2,155.99 and 3,051.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.99 : 3,051.42 = 3,051.42 : x
2. Step 2: Convert to fraction form
   2,155.99/3,051.42 = 3,051.42/x
3. Step 3: Cross multiply
   2,155.99x = 3,051.42 × 3,051.42
4. Step 4: Simplify right side
   2,155.99x = 9,311,175.46
5. Step 5: Solve for x
   x = 9,311,175.46/2,155.99
6. Step 6: Final answer
   x = 4,318.74