Finding the Third Proportional to 12,956 and 28,420

Step by Step Solution

1. Step 1: Write the proportion equation
   12,956 : 28,420 = 28,420 : x
2. Step 2: Convert to fraction form
   12,956/28,420 = 28,420/x
3. Step 3: Cross multiply
   12,956x = 28,420 × 28,420
4. Step 4: Simplify right side
   12,956x = 807,696,400
5. Step 5: Solve for x
   x = 807,696,400/12,956
6. Step 6: Final answer
   x = 62,341.49