Finding the Third Proportional to 316,064 and 447,216

Step by Step Solution

1. Step 1: Write the proportion equation
   316,064 : 447,216 = 447,216 : x
2. Step 2: Convert to fraction form
   316,064/447,216 = 447,216/x
3. Step 3: Cross multiply
   316,064x = 447,216 × 447,216
4. Step 4: Simplify right side
   316,064x = 200,002,150,656
5. Step 5: Solve for x
   x = 200,002,150,656/316,064
6. Step 6: Final answer
   x = 632,790.04