Finding the Third Proportional to 415,096 and 622,648

Step by Step Solution

1. Step 1: Write the proportion equation
   415,096 : 622,648 = 622,648 : x
2. Step 2: Convert to fraction form
   415,096/622,648 = 622,648/x
3. Step 3: Cross multiply
   415,096x = 622,648 × 622,648
4. Step 4: Simplify right side
   415,096x = 387,690,531,904
5. Step 5: Solve for x
   x = 387,690,531,904/415,096
6. Step 6: Final answer
   x = 933,978.00