Finding the Third Proportional to 12,917 and 28,007

Step by Step Solution

1. Step 1: Write the proportion equation
   12,917 : 28,007 = 28,007 : x
2. Step 2: Convert to fraction form
   12,917/28,007 = 28,007/x
3. Step 3: Cross multiply
   12,917x = 28,007 × 28,007
4. Step 4: Simplify right side
   12,917x = 784,392,049
5. Step 5: Solve for x
   x = 784,392,049/12,917
6. Step 6: Final answer
   x = 60,725.56