Finding the Third Proportional to 515,707 and 796,888.50

Step by Step Solution

1. Step 1: Write the proportion equation
   515,707 : 796,888.50 = 796,888.50 : x
2. Step 2: Convert to fraction form
   515,707/796,888.50 = 796,888.50/x
3. Step 3: Cross multiply
   515,707x = 796,888.50 × 796,888.50
4. Step 4: Simplify right side
   515,707x = 635,031,281,432.25
5. Step 5: Solve for x
   x = 635,031,281,432.25/515,707
6. Step 6: Final answer
   x = 1,231,379.99