Finding the Third Proportional to 12,880 and 28,104

Step by Step Solution

1. Step 1: Write the proportion equation
   12,880 : 28,104 = 28,104 : x
2. Step 2: Convert to fraction form
   12,880/28,104 = 28,104/x
3. Step 3: Cross multiply
   12,880x = 28,104 × 28,104
4. Step 4: Simplify right side
   12,880x = 789,834,816
5. Step 5: Solve for x
   x = 789,834,816/12,880
6. Step 6: Final answer
   x = 61,322.58