Finding the Third Proportional to 103,248 and 215,856

Step by Step Solution

1. Step 1: Write the proportion equation
   103,248 : 215,856 = 215,856 : x
2. Step 2: Convert to fraction form
   103,248/215,856 = 215,856/x
3. Step 3: Cross multiply
   103,248x = 215,856 × 215,856
4. Step 4: Simplify right side
   103,248x = 46,593,812,736
5. Step 5: Solve for x
   x = 46,593,812,736/103,248
6. Step 6: Final answer
   x = 451,280.54