Finding the Third Proportional to 12,620 and 27,670

Step by Step Solution

1. Step 1: Write the proportion equation
   12,620 : 27,670 = 27,670 : x
2. Step 2: Convert to fraction form
   12,620/27,670 = 27,670/x
3. Step 3: Cross multiply
   12,620x = 27,670 × 27,670
4. Step 4: Simplify right side
   12,620x = 765,628,900
5. Step 5: Solve for x
   x = 765,628,900/12,620
6. Step 6: Final answer
   x = 60,667.90