Finding the Third Proportional to 35,640 and 54,360

Step by Step Solution

1. Step 1: Write the proportion equation
   35,640 : 54,360 = 54,360 : x
2. Step 2: Convert to fraction form
   35,640/54,360 = 54,360/x
3. Step 3: Cross multiply
   35,640x = 54,360 × 54,360
4. Step 4: Simplify right side
   35,640x = 2,955,009,600
5. Step 5: Solve for x
   x = 2,955,009,600/35,640
6. Step 6: Final answer
   x = 82,912.73