Finding the Third Proportional to 368,089.31 and 778,618.83

Step by Step Solution

1. Step 1: Write the proportion equation
   368,089.31 : 778,618.83 = 778,618.83 : x
2. Step 2: Convert to fraction form
   368,089.31/778,618.83 = 778,618.83/x
3. Step 3: Cross multiply
   368,089.31x = 778,618.83 × 778,618.83
4. Step 4: Simplify right side
   368,089.31x = 606,247,279,510.75
5. Step 5: Solve for x
   x = 606,247,279,510.75/368,089.31
6. Step 6: Final answer
   x = 1,647,011.36