Finding the Third Proportional to 300,677.25 and 648,006

Step by Step Solution

1. Step 1: Write the proportion equation
   300,677.25 : 648,006 = 648,006 : x
2. Step 2: Convert to fraction form
   300,677.25/648,006 = 648,006/x
3. Step 3: Cross multiply
   300,677.25x = 648,006 × 648,006
4. Step 4: Simplify right side
   300,677.25x = 419,911,776,036
5. Step 5: Solve for x
   x = 419,911,776,036/300,677.25
6. Step 6: Final answer
   x = 1,396,553.20