Finding the Third Proportional to 15,896 and 31,390

Step by Step Solution

1. Step 1: Write the proportion equation
   15,896 : 31,390 = 31,390 : x
2. Step 2: Convert to fraction form
   15,896/31,390 = 31,390/x
3. Step 3: Cross multiply
   15,896x = 31,390 × 31,390
4. Step 4: Simplify right side
   15,896x = 985,332,100
5. Step 5: Solve for x
   x = 985,332,100/15,896
6. Step 6: Final answer
   x = 61,986.17