Finding the Third Proportional to 300,862 and 660,780

Step by Step Solution

1. Step 1: Write the proportion equation
   300,862 : 660,780 = 660,780 : x
2. Step 2: Convert to fraction form
   300,862/660,780 = 660,780/x
3. Step 3: Cross multiply
   300,862x = 660,780 × 660,780
4. Step 4: Simplify right side
   300,862x = 436,630,208,400
5. Step 5: Solve for x
   x = 436,630,208,400/300,862
6. Step 6: Final answer
   x = 1,451,264.06