Finding the Third Proportional to 506,799 and 802,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   506,799 : 802,426.50 = 802,426.50 : x
2. Step 2: Convert to fraction form
   506,799/802,426.50 = 802,426.50/x
3. Step 3: Cross multiply
   506,799x = 802,426.50 × 802,426.50
4. Step 4: Simplify right side
   506,799x = 643,888,287,902.25
5. Step 5: Solve for x
   x = 643,888,287,902.25/506,799
6. Step 6: Final answer
   x = 1,270,500.31