Finding the Third Proportional to 19,109.25 and 40,678.88

Step by Step Solution

1. Step 1: Write the proportion equation
   19,109.25 : 40,678.88 = 40,678.88 : x
2. Step 2: Convert to fraction form
   19,109.25/40,678.88 = 40,678.88/x
3. Step 3: Cross multiply
   19,109.25x = 40,678.88 × 40,678.88
4. Step 4: Simplify right side
   19,109.25x = 1,654,770,871.27
5. Step 5: Solve for x
   x = 1,654,770,871.27/19,109.25
6. Step 6: Final answer
   x = 86,595.28