Finding the Third Proportional to 300,871.50 and 660,789

Step by Step Solution

1. Step 1: Write the proportion equation
   300,871.50 : 660,789 = 660,789 : x
2. Step 2: Convert to fraction form
   300,871.50/660,789 = 660,789/x
3. Step 3: Cross multiply
   300,871.50x = 660,789 × 660,789
4. Step 4: Simplify right side
   300,871.50x = 436,642,102,521
5. Step 5: Solve for x
   x = 436,642,102,521/300,871.50
6. Step 6: Final answer
   x = 1,451,257.77