Finding the Third Proportional to 12,111.25 and 16,438.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.25 : 16,438.75 = 16,438.75 : x
2. Step 2: Convert to fraction form
   12,111.25/16,438.75 = 16,438.75/x
3. Step 3: Cross multiply
   12,111.25x = 16,438.75 × 16,438.75
4. Step 4: Simplify right side
   12,111.25x = 270,232,501.56
5. Step 5: Solve for x
   x = 270,232,501.56/12,111.25
6. Step 6: Final answer
   x = 22,312.52