Finding the Third Proportional to 7,215.75 and 12,038.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,215.75 : 12,038.25 = 12,038.25 : x
2. Step 2: Convert to fraction form
   7,215.75/12,038.25 = 12,038.25/x
3. Step 3: Cross multiply
   7,215.75x = 12,038.25 × 12,038.25
4. Step 4: Simplify right side
   7,215.75x = 144,919,463.06
5. Step 5: Solve for x
   x = 144,919,463.06/7,215.75
6. Step 6: Final answer
   x = 20,083.77