Finding the Third Proportional to 297,932 and 648,280

Step by Step Solution

1. Step 1: Write the proportion equation
   297,932 : 648,280 = 648,280 : x
2. Step 2: Convert to fraction form
   297,932/648,280 = 648,280/x
3. Step 3: Cross multiply
   297,932x = 648,280 × 648,280
4. Step 4: Simplify right side
   297,932x = 420,266,958,400
5. Step 5: Solve for x
   x = 420,266,958,400/297,932
6. Step 6: Final answer
   x = 1,410,613.69