Finding the Third Proportional to 19,016.65 and 39,998.18

Step by Step Solution

1. Step 1: Write the proportion equation
   19,016.65 : 39,998.18 = 39,998.18 : x
2. Step 2: Convert to fraction form
   19,016.65/39,998.18 = 39,998.18/x
3. Step 3: Cross multiply
   19,016.65x = 39,998.18 × 39,998.18
4. Step 4: Simplify right side
   19,016.65x = 1,599,854,378.31
5. Step 5: Solve for x
   x = 1,599,854,378.31/19,016.65
6. Step 6: Final answer
   x = 84,129.15