Finding the Third Proportional to 18,895.78 and 39,340.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,895.78 : 39,340.69 = 39,340.69 : x
2. Step 2: Convert to fraction form
   18,895.78/39,340.69 = 39,340.69/x
3. Step 3: Cross multiply
   18,895.78x = 39,340.69 × 39,340.69
4. Step 4: Simplify right side
   18,895.78x = 1,547,689,692.97
5. Step 5: Solve for x
   x = 1,547,689,692.97/18,895.78
6. Step 6: Final answer
   x = 81,906.63