Finding the Third Proportional to 20,616 and 31,020

Step by Step Solution

1. Step 1: Write the proportion equation
   20,616 : 31,020 = 31,020 : x
2. Step 2: Convert to fraction form
   20,616/31,020 = 31,020/x
3. Step 3: Cross multiply
   20,616x = 31,020 × 31,020
4. Step 4: Simplify right side
   20,616x = 962,240,400
5. Step 5: Solve for x
   x = 962,240,400/20,616
6. Step 6: Final answer
   x = 46,674.45