Finding the Third Proportional to 300,878 and 653,626

Step by Step Solution

1. Step 1: Write the proportion equation
   300,878 : 653,626 = 653,626 : x
2. Step 2: Convert to fraction form
   300,878/653,626 = 653,626/x
3. Step 3: Cross multiply
   300,878x = 653,626 × 653,626
4. Step 4: Simplify right side
   300,878x = 427,226,947,876
5. Step 5: Solve for x
   x = 427,226,947,876/300,878
6. Step 6: Final answer
   x = 1,419,934.15