Finding the Third Proportional to 296,910 and 622,996

Step by Step Solution

1. Step 1: Write the proportion equation
   296,910 : 622,996 = 622,996 : x
2. Step 2: Convert to fraction form
   296,910/622,996 = 622,996/x
3. Step 3: Cross multiply
   296,910x = 622,996 × 622,996
4. Step 4: Simplify right side
   296,910x = 388,124,016,016
5. Step 5: Solve for x
   x = 388,124,016,016/296,910
6. Step 6: Final answer
   x = 1,307,210.99