Finding the Third Proportional to 19,980 and 31,326.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,980 : 31,326.75 = 31,326.75 : x
2. Step 2: Convert to fraction form
   19,980/31,326.75 = 31,326.75/x
3. Step 3: Cross multiply
   19,980x = 31,326.75 × 31,326.75
4. Step 4: Simplify right side
   19,980x = 981,365,265.56
5. Step 5: Solve for x
   x = 981,365,265.56/19,980
6. Step 6: Final answer
   x = 49,117.38