Finding the Third Proportional to 19,880 and 30,900

Step by Step Solution

1. Step 1: Write the proportion equation
   19,880 : 30,900 = 30,900 : x
2. Step 2: Convert to fraction form
   19,880/30,900 = 30,900/x
3. Step 3: Cross multiply
   19,880x = 30,900 × 30,900
4. Step 4: Simplify right side
   19,880x = 954,810,000
5. Step 5: Solve for x
   x = 954,810,000/19,880
6. Step 6: Final answer
   x = 48,028.67