Finding the Third Proportional to 19,620 and 41,976

Step by Step Solution

1. Step 1: Write the proportion equation
   19,620 : 41,976 = 41,976 : x
2. Step 2: Convert to fraction form
   19,620/41,976 = 41,976/x
3. Step 3: Cross multiply
   19,620x = 41,976 × 41,976
4. Step 4: Simplify right side
   19,620x = 1,761,984,576
5. Step 5: Solve for x
   x = 1,761,984,576/19,620
6. Step 6: Final answer
   x = 89,805.53