Finding the Third Proportional to 18,804.38 and 40,478.63

Step by Step Solution

1. Step 1: Write the proportion equation
   18,804.38 : 40,478.63 = 40,478.63 : x
2. Step 2: Convert to fraction form
   18,804.38/40,478.63 = 40,478.63/x
3. Step 3: Cross multiply
   18,804.38x = 40,478.63 × 40,478.63
4. Step 4: Simplify right side
   18,804.38x = 1,638,519,081.89
5. Step 5: Solve for x
   x = 1,638,519,081.89/18,804.38
6. Step 6: Final answer
   x = 87,134.99