Finding the Third Proportional to 57,360 and 86,904

Step by Step Solution

1. Step 1: Write the proportion equation
   57,360 : 86,904 = 86,904 : x
2. Step 2: Convert to fraction form
   57,360/86,904 = 86,904/x
3. Step 3: Cross multiply
   57,360x = 86,904 × 86,904
4. Step 4: Simplify right side
   57,360x = 7,552,305,216
5. Step 5: Solve for x
   x = 7,552,305,216/57,360
6. Step 6: Final answer
   x = 131,665.01