Finding the Third Proportional to 386,575.50 and 799,668

Step by Step Solution

1. Step 1: Write the proportion equation
   386,575.50 : 799,668 = 799,668 : x
2. Step 2: Convert to fraction form
   386,575.50/799,668 = 799,668/x
3. Step 3: Cross multiply
   386,575.50x = 799,668 × 799,668
4. Step 4: Simplify right side
   386,575.50x = 639,468,910,224
5. Step 5: Solve for x
   x = 639,468,910,224/386,575.50
6. Step 6: Final answer
   x = 1,654,188.92