Finding the Third Proportional to 16,640 and 30,904

Step by Step Solution

1. Step 1: Write the proportion equation
   16,640 : 30,904 = 30,904 : x
2. Step 2: Convert to fraction form
   16,640/30,904 = 30,904/x
3. Step 3: Cross multiply
   16,640x = 30,904 × 30,904
4. Step 4: Simplify right side
   16,640x = 955,057,216
5. Step 5: Solve for x
   x = 955,057,216/16,640
6. Step 6: Final answer
   x = 57,395.27