Finding the Third Proportional to 333,826 and 690,979

Step by Step Solution

1. Step 1: Write the proportion equation
   333,826 : 690,979 = 690,979 : x
2. Step 2: Convert to fraction form
   333,826/690,979 = 690,979/x
3. Step 3: Cross multiply
   333,826x = 690,979 × 690,979
4. Step 4: Simplify right side
   333,826x = 477,451,978,441
5. Step 5: Solve for x
   x = 477,451,978,441/333,826
6. Step 6: Final answer
   x = 1,430,242.04