Finding the Third Proportional to 39,409.50 and 57,578.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,409.50 : 57,578.25 = 57,578.25 : x
2. Step 2: Convert to fraction form
   39,409.50/57,578.25 = 57,578.25/x
3. Step 3: Cross multiply
   39,409.50x = 57,578.25 × 57,578.25
4. Step 4: Simplify right side
   39,409.50x = 3,315,254,873.06
5. Step 5: Solve for x
   x = 3,315,254,873.06/39,409.50
6. Step 6: Final answer
   x = 84,123.24