Finding the Third Proportional to 12,987 and 17,332.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,987 : 17,332.25 = 17,332.25 : x
2. Step 2: Convert to fraction form
   12,987/17,332.25 = 17,332.25/x
3. Step 3: Cross multiply
   12,987x = 17,332.25 × 17,332.25
4. Step 4: Simplify right side
   12,987x = 300,406,890.06
5. Step 5: Solve for x
   x = 300,406,890.06/12,987
6. Step 6: Final answer
   x = 23,131.35