Finding the Third Proportional to 297,851 and 648,238

Step by Step Solution

1. Step 1: Write the proportion equation
   297,851 : 648,238 = 648,238 : x
2. Step 2: Convert to fraction form
   297,851/648,238 = 648,238/x
3. Step 3: Cross multiply
   297,851x = 648,238 × 648,238
4. Step 4: Simplify right side
   297,851x = 420,212,504,644
5. Step 5: Solve for x
   x = 420,212,504,644/297,851
6. Step 6: Final answer
   x = 1,410,814.48