Finding the Third Proportional to 8,938.97 and 13,131.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,938.97 : 13,131.28 = 13,131.28 : x
2. Step 2: Convert to fraction form
   8,938.97/13,131.28 = 13,131.28/x
3. Step 3: Cross multiply
   8,938.97x = 13,131.28 × 13,131.28
4. Step 4: Simplify right side
   8,938.97x = 172,430,547.27
5. Step 5: Solve for x
   x = 172,430,547.27/8,938.97
6. Step 6: Final answer
   x = 19,289.76