Finding the Third Proportional to 17,788.50 and 39,516

Step by Step Solution

1. Step 1: Write the proportion equation
   17,788.50 : 39,516 = 39,516 : x
2. Step 2: Convert to fraction form
   17,788.50/39,516 = 39,516/x
3. Step 3: Cross multiply
   17,788.50x = 39,516 × 39,516
4. Step 4: Simplify right side
   17,788.50x = 1,561,514,256
5. Step 5: Solve for x
   x = 1,561,514,256/17,788.50
6. Step 6: Final answer
   x = 87,782.23