Finding the Third Proportional to 15,458 and 31,684

Step by Step Solution

1. Step 1: Write the proportion equation
   15,458 : 31,684 = 31,684 : x
2. Step 2: Convert to fraction form
   15,458/31,684 = 31,684/x
3. Step 3: Cross multiply
   15,458x = 31,684 × 31,684
4. Step 4: Simplify right side
   15,458x = 1,003,875,856
5. Step 5: Solve for x
   x = 1,003,875,856/15,458
6. Step 6: Final answer
   x = 64,942.16