Finding the Third Proportional to 17,838.91 and 39,208.90

Step by Step Solution

1. Step 1: Write the proportion equation
   17,838.91 : 39,208.90 = 39,208.90 : x
2. Step 2: Convert to fraction form
   17,838.91/39,208.90 = 39,208.90/x
3. Step 3: Cross multiply
   17,838.91x = 39,208.90 × 39,208.90
4. Step 4: Simplify right side
   17,838.91x = 1,537,338,176.16
5. Step 5: Solve for x
   x = 1,537,338,176.16/17,838.91
6. Step 6: Final answer
   x = 86,178.95