Finding the Third Proportional to 3,904.88 and 9,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,904.88 : 9,031.50 = 9,031.50 : x
2. Step 2: Convert to fraction form
   3,904.88/9,031.50 = 9,031.50/x
3. Step 3: Cross multiply
   3,904.88x = 9,031.50 × 9,031.50
4. Step 4: Simplify right side
   3,904.88x = 81,567,992.25
5. Step 5: Solve for x
   x = 81,567,992.25/3,904.88
6. Step 6: Final answer
   x = 20,888.76