Finding the Third Proportional to 19,212.19 and 39,781.13

Step by Step Solution

1. Step 1: Write the proportion equation
   19,212.19 : 39,781.13 = 39,781.13 : x
2. Step 2: Convert to fraction form
   19,212.19/39,781.13 = 39,781.13/x
3. Step 3: Cross multiply
   19,212.19x = 39,781.13 × 39,781.13
4. Step 4: Simplify right side
   19,212.19x = 1,582,537,906.27
5. Step 5: Solve for x
   x = 1,582,537,906.27/19,212.19
6. Step 6: Final answer
   x = 82,371.56