Finding the Third Proportional to 31,831.88 and 70,020

Step by Step Solution

1. Step 1: Write the proportion equation
   31,831.88 : 70,020 = 70,020 : x
2. Step 2: Convert to fraction form
   31,831.88/70,020 = 70,020/x
3. Step 3: Cross multiply
   31,831.88x = 70,020 × 70,020
4. Step 4: Simplify right side
   31,831.88x = 4,902,800,400
5. Step 5: Solve for x
   x = 4,902,800,400/31,831.88
6. Step 6: Final answer
   x = 154,021.73