Finding the Third Proportional to 12,870 and 27,912

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870 : 27,912 = 27,912 : x
2. Step 2: Convert to fraction form
   12,870/27,912 = 27,912/x
3. Step 3: Cross multiply
   12,870x = 27,912 × 27,912
4. Step 4: Simplify right side
   12,870x = 779,079,744
5. Step 5: Solve for x
   x = 779,079,744/12,870
6. Step 6: Final answer
   x = 60,534.56