Finding the Third Proportional to 30,660 and 62,610

Step by Step Solution

1. Step 1: Write the proportion equation
   30,660 : 62,610 = 62,610 : x
2. Step 2: Convert to fraction form
   30,660/62,610 = 62,610/x
3. Step 3: Cross multiply
   30,660x = 62,610 × 62,610
4. Step 4: Simplify right side
   30,660x = 3,920,012,100
5. Step 5: Solve for x
   x = 3,920,012,100/30,660
6. Step 6: Final answer
   x = 127,854.28