Finding the Third Proportional to 8,002 and 12,783

Step by Step Solution

1. Step 1: Write the proportion equation
   8,002 : 12,783 = 12,783 : x
2. Step 2: Convert to fraction form
   8,002/12,783 = 12,783/x
3. Step 3: Cross multiply
   8,002x = 12,783 × 12,783
4. Step 4: Simplify right side
   8,002x = 163,405,089
5. Step 5: Solve for x
   x = 163,405,089/8,002
6. Step 6: Final answer
   x = 20,420.53