Finding the Third Proportional to 300,870 and 660,786

Step by Step Solution

1. Step 1: Write the proportion equation
   300,870 : 660,786 = 660,786 : x
2. Step 2: Convert to fraction form
   300,870/660,786 = 660,786/x
3. Step 3: Cross multiply
   300,870x = 660,786 × 660,786
4. Step 4: Simplify right side
   300,870x = 436,638,137,796
5. Step 5: Solve for x
   x = 436,638,137,796/300,870
6. Step 6: Final answer
   x = 1,451,251.83