Finding the Third Proportional to 331,879.50 and 780,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   331,879.50 : 780,124.50 = 780,124.50 : x
2. Step 2: Convert to fraction form
   331,879.50/780,124.50 = 780,124.50/x
3. Step 3: Cross multiply
   331,879.50x = 780,124.50 × 780,124.50
4. Step 4: Simplify right side
   331,879.50x = 608,594,235,500.25
5. Step 5: Solve for x
   x = 608,594,235,500.25/331,879.50
6. Step 6: Final answer
   x = 1,833,780.74