Finding the Third Proportional to 13,651 and 21,590

Step by Step Solution

1. Step 1: Write the proportion equation
   13,651 : 21,590 = 21,590 : x
2. Step 2: Convert to fraction form
   13,651/21,590 = 21,590/x
3. Step 3: Cross multiply
   13,651x = 21,590 × 21,590
4. Step 4: Simplify right side
   13,651x = 466,128,100
5. Step 5: Solve for x
   x = 466,128,100/13,651
6. Step 6: Final answer
   x = 34,146.08