Finding the Third Proportional to 17,420 and 31,384

Step by Step Solution

1. Step 1: Write the proportion equation
   17,420 : 31,384 = 31,384 : x
2. Step 2: Convert to fraction form
   17,420/31,384 = 31,384/x
3. Step 3: Cross multiply
   17,420x = 31,384 × 31,384
4. Step 4: Simplify right side
   17,420x = 984,955,456
5. Step 5: Solve for x
   x = 984,955,456/17,420
6. Step 6: Final answer
   x = 56,541.65