Finding the Third Proportional to 31,208 and 54,640

Step by Step Solution

1. Step 1: Write the proportion equation
   31,208 : 54,640 = 54,640 : x
2. Step 2: Convert to fraction form
   31,208/54,640 = 54,640/x
3. Step 3: Cross multiply
   31,208x = 54,640 × 54,640
4. Step 4: Simplify right side
   31,208x = 2,985,529,600
5. Step 5: Solve for x
   x = 2,985,529,600/31,208
6. Step 6: Final answer
   x = 95,665.52