Finding the Third Proportional to 15,216 and 31,368

Step by Step Solution

1. Step 1: Write the proportion equation
   15,216 : 31,368 = 31,368 : x
2. Step 2: Convert to fraction form
   15,216/31,368 = 31,368/x
3. Step 3: Cross multiply
   15,216x = 31,368 × 31,368
4. Step 4: Simplify right side
   15,216x = 983,951,424
5. Step 5: Solve for x
   x = 983,951,424/15,216
6. Step 6: Final answer
   x = 64,665.58