Finding the Third Proportional to 10,690.31 and 16,446.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,690.31 : 16,446.38 = 16,446.38 : x
2. Step 2: Convert to fraction form
   10,690.31/16,446.38 = 16,446.38/x
3. Step 3: Cross multiply
   10,690.31x = 16,446.38 × 16,446.38
4. Step 4: Simplify right side
   10,690.31x = 270,483,250.64
5. Step 5: Solve for x
   x = 270,483,250.64/10,690.31
6. Step 6: Final answer
   x = 25,301.72