Finding the Third Proportional to 25,680 and 39,456

Step by Step Solution

1. Step 1: Write the proportion equation
   25,680 : 39,456 = 39,456 : x
2. Step 2: Convert to fraction form
   25,680/39,456 = 39,456/x
3. Step 3: Cross multiply
   25,680x = 39,456 × 39,456
4. Step 4: Simplify right side
   25,680x = 1,556,775,936
5. Step 5: Solve for x
   x = 1,556,775,936/25,680
6. Step 6: Final answer
   x = 60,622.12