Finding the Third Proportional to 12,789 and 28,106

Step by Step Solution

1. Step 1: Write the proportion equation
   12,789 : 28,106 = 28,106 : x
2. Step 2: Convert to fraction form
   12,789/28,106 = 28,106/x
3. Step 3: Cross multiply
   12,789x = 28,106 × 28,106
4. Step 4: Simplify right side
   12,789x = 789,947,236
5. Step 5: Solve for x
   x = 789,947,236/12,789
6. Step 6: Final answer
   x = 61,767.71