Finding the Third Proportional to 7,691.63 and 16,689.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,691.63 : 16,689.38 = 16,689.38 : x
2. Step 2: Convert to fraction form
   7,691.63/16,689.38 = 16,689.38/x
3. Step 3: Cross multiply
   7,691.63x = 16,689.38 × 16,689.38
4. Step 4: Simplify right side
   7,691.63x = 278,535,237.89
5. Step 5: Solve for x
   x = 278,535,237.89/7,691.63
6. Step 6: Final answer
   x = 36,212.79