Finding the Third Proportional to 12,868 and 28,200

Step by Step Solution

1. Step 1: Write the proportion equation
   12,868 : 28,200 = 28,200 : x
2. Step 2: Convert to fraction form
   12,868/28,200 = 28,200/x
3. Step 3: Cross multiply
   12,868x = 28,200 × 28,200
4. Step 4: Simplify right side
   12,868x = 795,240,000
5. Step 5: Solve for x
   x = 795,240,000/12,868
6. Step 6: Final answer
   x = 61,799.81