Finding the Third Proportional to 12,868 and 28,148

Step by Step Solution

1. Step 1: Write the proportion equation
   12,868 : 28,148 = 28,148 : x
2. Step 2: Convert to fraction form
   12,868/28,148 = 28,148/x
3. Step 3: Cross multiply
   12,868x = 28,148 × 28,148
4. Step 4: Simplify right side
   12,868x = 792,309,904
5. Step 5: Solve for x
   x = 792,309,904/12,868
6. Step 6: Final answer
   x = 61,572.11