Finding the Third Proportional to 2,238.75 and 3,486.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.75 : 3,486.38 = 3,486.38 : x
2. Step 2: Convert to fraction form
   2,238.75/3,486.38 = 3,486.38/x
3. Step 3: Cross multiply
   2,238.75x = 3,486.38 × 3,486.38
4. Step 4: Simplify right side
   2,238.75x = 12,154,810.64
5. Step 5: Solve for x
   x = 12,154,810.64/2,238.75
6. Step 6: Final answer
   x = 5,429.28