Finding the Third Proportional to 9,590 and 12,887

Step by Step Solution

1. Step 1: Write the proportion equation
   9,590 : 12,887 = 12,887 : x
2. Step 2: Convert to fraction form
   9,590/12,887 = 12,887/x
3. Step 3: Cross multiply
   9,590x = 12,887 × 12,887
4. Step 4: Simplify right side
   9,590x = 166,074,769
5. Step 5: Solve for x
   x = 166,074,769/9,590
6. Step 6: Final answer
   x = 17,317.49