Finding the Third Proportional to 18,208.34 and 39,726.49

Step by Step Solution

1. Step 1: Write the proportion equation
   18,208.34 : 39,726.49 = 39,726.49 : x
2. Step 2: Convert to fraction form
   18,208.34/39,726.49 = 39,726.49/x
3. Step 3: Cross multiply
   18,208.34x = 39,726.49 × 39,726.49
4. Step 4: Simplify right side
   18,208.34x = 1,578,194,181.52
5. Step 5: Solve for x
   x = 1,578,194,181.52/18,208.34
6. Step 6: Final answer
   x = 86,674.27