Finding the Third Proportional to 15,648 and 31,716

Step by Step Solution

1. Step 1: Write the proportion equation
   15,648 : 31,716 = 31,716 : x
2. Step 2: Convert to fraction form
   15,648/31,716 = 31,716/x
3. Step 3: Cross multiply
   15,648x = 31,716 × 31,716
4. Step 4: Simplify right side
   15,648x = 1,005,904,656
5. Step 5: Solve for x
   x = 1,005,904,656/15,648
6. Step 6: Final answer
   x = 64,283.27