Finding the Third Proportional to 19,915 and 41,870

Step by Step Solution

1. Step 1: Write the proportion equation
   19,915 : 41,870 = 41,870 : x
2. Step 2: Convert to fraction form
   19,915/41,870 = 41,870/x
3. Step 3: Cross multiply
   19,915x = 41,870 × 41,870
4. Step 4: Simplify right side
   19,915x = 1,753,096,900
5. Step 5: Solve for x
   x = 1,753,096,900/19,915
6. Step 6: Final answer
   x = 88,028.97