Finding the Third Proportional to 499,501.69 and 779,893.31

Step by Step Solution

1. Step 1: Write the proportion equation
   499,501.69 : 779,893.31 = 779,893.31 : x
2. Step 2: Convert to fraction form
   499,501.69/779,893.31 = 779,893.31/x
3. Step 3: Cross multiply
   499,501.69x = 779,893.31 × 779,893.31
4. Step 4: Simplify right side
   499,501.69x = 608,233,578,882.22
5. Step 5: Solve for x
   x = 608,233,578,882.22/499,501.69
6. Step 6: Final answer
   x = 1,217,680.73