Finding the Third Proportional to 386,572.50 and 799,662.38

Step by Step Solution

1. Step 1: Write the proportion equation
   386,572.50 : 799,662.38 = 799,662.38 : x
2. Step 2: Convert to fraction form
   386,572.50/799,662.38 = 799,662.38/x
3. Step 3: Cross multiply
   386,572.50x = 799,662.38 × 799,662.38
4. Step 4: Simplify right side
   386,572.50x = 639,459,913,990.64
5. Step 5: Solve for x
   x = 639,459,913,990.64/386,572.50
6. Step 6: Final answer
   x = 1,654,178.49