Finding the Third Proportional to 19,980 and 41,873.63

Step by Step Solution

1. Step 1: Write the proportion equation
   19,980 : 41,873.63 = 41,873.63 : x
2. Step 2: Convert to fraction form
   19,980/41,873.63 = 41,873.63/x
3. Step 3: Cross multiply
   19,980x = 41,873.63 × 41,873.63
4. Step 4: Simplify right side
   19,980x = 1,753,400,470.64
5. Step 5: Solve for x
   x = 1,753,400,470.64/19,980
6. Step 6: Final answer
   x = 87,757.78