Finding the Third Proportional to 300,878 and 660,801

Step by Step Solution

1. Step 1: Write the proportion equation
   300,878 : 660,801 = 660,801 : x
2. Step 2: Convert to fraction form
   300,878/660,801 = 660,801/x
3. Step 3: Cross multiply
   300,878x = 660,801 × 660,801
4. Step 4: Simplify right side
   300,878x = 436,657,961,601
5. Step 5: Solve for x
   x = 436,657,961,601/300,878
6. Step 6: Final answer
   x = 1,451,279.13