Finding the Third Proportional to 300,865.88 and 660,783

Step by Step Solution

1. Step 1: Write the proportion equation
   300,865.88 : 660,783 = 660,783 : x
2. Step 2: Convert to fraction form
   300,865.88/660,783 = 660,783/x
3. Step 3: Cross multiply
   300,865.88x = 660,783 × 660,783
4. Step 4: Simplify right side
   300,865.88x = 436,634,173,089
5. Step 5: Solve for x
   x = 436,634,173,089/300,865.88
6. Step 6: Final answer
   x = 1,451,258.55