Finding the Third Proportional to 19,920 and 30,276

Step by Step Solution

1. Step 1: Write the proportion equation
   19,920 : 30,276 = 30,276 : x
2. Step 2: Convert to fraction form
   19,920/30,276 = 30,276/x
3. Step 3: Cross multiply
   19,920x = 30,276 × 30,276
4. Step 4: Simplify right side
   19,920x = 916,636,176
5. Step 5: Solve for x
   x = 916,636,176/19,920
6. Step 6: Final answer
   x = 46,015.87