Finding the Third Proportional to 12,805 and 28,099

Step by Step Solution

1. Step 1: Write the proportion equation
   12,805 : 28,099 = 28,099 : x
2. Step 2: Convert to fraction form
   12,805/28,099 = 28,099/x
3. Step 3: Cross multiply
   12,805x = 28,099 × 28,099
4. Step 4: Simplify right side
   12,805x = 789,553,801
5. Step 5: Solve for x
   x = 789,553,801/12,805
6. Step 6: Final answer
   x = 61,659.80