Finding the Third Proportional to 12,956 and 20,486

Step by Step Solution

1. Step 1: Write the proportion equation
   12,956 : 20,486 = 20,486 : x
2. Step 2: Convert to fraction form
   12,956/20,486 = 20,486/x
3. Step 3: Cross multiply
   12,956x = 20,486 × 20,486
4. Step 4: Simplify right side
   12,956x = 419,676,196
5. Step 5: Solve for x
   x = 419,676,196/12,956
6. Step 6: Final answer
   x = 32,392.42