Finding the Third Proportional to 31,008 and 49,920

Step by Step Solution

1. Step 1: Write the proportion equation
   31,008 : 49,920 = 49,920 : x
2. Step 2: Convert to fraction form
   31,008/49,920 = 49,920/x
3. Step 3: Cross multiply
   31,008x = 49,920 × 49,920
4. Step 4: Simplify right side
   31,008x = 2,492,006,400
5. Step 5: Solve for x
   x = 2,492,006,400/31,008
6. Step 6: Final answer
   x = 80,366.56