Finding the Third Proportional to 300,962 and 641,956

Step by Step Solution

1. Step 1: Write the proportion equation
   300,962 : 641,956 = 641,956 : x
2. Step 2: Convert to fraction form
   300,962/641,956 = 641,956/x
3. Step 3: Cross multiply
   300,962x = 641,956 × 641,956
4. Step 4: Simplify right side
   300,962x = 412,107,505,936
5. Step 5: Solve for x
   x = 412,107,505,936/300,962
6. Step 6: Final answer
   x = 1,369,300.80