Finding the Third Proportional to 368,536.50 and 776,439

Step by Step Solution

1. Step 1: Write the proportion equation
   368,536.50 : 776,439 = 776,439 : x
2. Step 2: Convert to fraction form
   368,536.50/776,439 = 776,439/x
3. Step 3: Cross multiply
   368,536.50x = 776,439 × 776,439
4. Step 4: Simplify right side
   368,536.50x = 602,857,520,721
5. Step 5: Solve for x
   x = 602,857,520,721/368,536.50
6. Step 6: Final answer
   x = 1,635,814.96