Finding the Third Proportional to 18,705.38 and 40,684.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,705.38 : 40,684.50 = 40,684.50 : x
2. Step 2: Convert to fraction form
   18,705.38/40,684.50 = 40,684.50/x
3. Step 3: Cross multiply
   18,705.38x = 40,684.50 × 40,684.50
4. Step 4: Simplify right side
   18,705.38x = 1,655,228,540.25
5. Step 5: Solve for x
   x = 1,655,228,540.25/18,705.38
6. Step 6: Final answer
   x = 88,489.46