Finding the Third Proportional to 13,020 and 30,708

Step by Step Solution

1. Step 1: Write the proportion equation
   13,020 : 30,708 = 30,708 : x
2. Step 2: Convert to fraction form
   13,020/30,708 = 30,708/x
3. Step 3: Cross multiply
   13,020x = 30,708 × 30,708
4. Step 4: Simplify right side
   13,020x = 942,981,264
5. Step 5: Solve for x
   x = 942,981,264/13,020
6. Step 6: Final answer
   x = 72,425.60