Finding the Third Proportional to 300,887 and 648,795

Step by Step Solution

1. Step 1: Write the proportion equation
   300,887 : 648,795 = 648,795 : x
2. Step 2: Convert to fraction form
   300,887/648,795 = 648,795/x
3. Step 3: Cross multiply
   300,887x = 648,795 × 648,795
4. Step 4: Simplify right side
   300,887x = 420,934,952,025
5. Step 5: Solve for x
   x = 420,934,952,025/300,887
6. Step 6: Final answer
   x = 1,398,980.19