Finding the Third Proportional to 25,809.75 and 39,888.25

Step by Step Solution

1. Step 1: Write the proportion equation
   25,809.75 : 39,888.25 = 39,888.25 : x
2. Step 2: Convert to fraction form
   25,809.75/39,888.25 = 39,888.25/x
3. Step 3: Cross multiply
   25,809.75x = 39,888.25 × 39,888.25
4. Step 4: Simplify right side
   25,809.75x = 1,591,072,488.06
5. Step 5: Solve for x
   x = 1,591,072,488.06/25,809.75
6. Step 6: Final answer
   x = 61,646.18