Finding the Third Proportional to 12,700 and 27,860

Step by Step Solution

1. Step 1: Write the proportion equation
   12,700 : 27,860 = 27,860 : x
2. Step 2: Convert to fraction form
   12,700/27,860 = 27,860/x
3. Step 3: Cross multiply
   12,700x = 27,860 × 27,860
4. Step 4: Simplify right side
   12,700x = 776,179,600
5. Step 5: Solve for x
   x = 776,179,600/12,700
6. Step 6: Final answer
   x = 61,116.50