Finding the Third Proportional to 17,789.50 and 39,518

Step by Step Solution

1. Step 1: Write the proportion equation
   17,789.50 : 39,518 = 39,518 : x
2. Step 2: Convert to fraction form
   17,789.50/39,518 = 39,518/x
3. Step 3: Cross multiply
   17,789.50x = 39,518 × 39,518
4. Step 4: Simplify right side
   17,789.50x = 1,561,672,324
5. Step 5: Solve for x
   x = 1,561,672,324/17,789.50
6. Step 6: Final answer
   x = 87,786.18