Finding the Third Proportional to 295,366.50 and 647,919

Step by Step Solution

1. Step 1: Write the proportion equation
   295,366.50 : 647,919 = 647,919 : x
2. Step 2: Convert to fraction form
   295,366.50/647,919 = 647,919/x
3. Step 3: Cross multiply
   295,366.50x = 647,919 × 647,919
4. Step 4: Simplify right side
   295,366.50x = 419,799,030,561
5. Step 5: Solve for x
   x = 419,799,030,561/295,366.50
6. Step 6: Final answer
   x = 1,421,281.80