Finding the Third Proportional to 8,634.38 and 18,493.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,634.38 : 18,493.88 = 18,493.88 : x
2. Step 2: Convert to fraction form
   8,634.38/18,493.88 = 18,493.88/x
3. Step 3: Cross multiply
   8,634.38x = 18,493.88 × 18,493.88
4. Step 4: Simplify right side
   8,634.38x = 342,023,412.52
5. Step 5: Solve for x
   x = 342,023,412.52/8,634.38
6. Step 6: Final answer
   x = 39,611.83