Finding the Third Proportional to 13,476 and 20,486

Step by Step Solution

1. Step 1: Write the proportion equation
   13,476 : 20,486 = 20,486 : x
2. Step 2: Convert to fraction form
   13,476/20,486 = 20,486/x
3. Step 3: Cross multiply
   13,476x = 20,486 × 20,486
4. Step 4: Simplify right side
   13,476x = 419,676,196
5. Step 5: Solve for x
   x = 419,676,196/13,476
6. Step 6: Final answer
   x = 31,142.49