Finding the Third Proportional to 18,240.19 and 39,674.81

Step by Step Solution

1. Step 1: Write the proportion equation
   18,240.19 : 39,674.81 = 39,674.81 : x
2. Step 2: Convert to fraction form
   18,240.19/39,674.81 = 39,674.81/x
3. Step 3: Cross multiply
   18,240.19x = 39,674.81 × 39,674.81
4. Step 4: Simplify right side
   18,240.19x = 1,574,090,746.91
5. Step 5: Solve for x
   x = 1,574,090,746.91/18,240.19
6. Step 6: Final answer
   x = 86,297.95