Finding the Third Proportional to 11,238.75 and 12,372.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,238.75 : 12,372.75 = 12,372.75 : x
2. Step 2: Convert to fraction form
   11,238.75/12,372.75 = 12,372.75/x
3. Step 3: Cross multiply
   11,238.75x = 12,372.75 × 12,372.75
4. Step 4: Simplify right side
   11,238.75x = 153,084,942.56
5. Step 5: Solve for x
   x = 153,084,942.56/11,238.75
6. Step 6: Final answer
   x = 13,621.17