Finding the Third Proportional to 359,979.50 and 773,380.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,979.50 : 773,380.50 = 773,380.50 : x
2. Step 2: Convert to fraction form
   359,979.50/773,380.50 = 773,380.50/x
3. Step 3: Cross multiply
   359,979.50x = 773,380.50 × 773,380.50
4. Step 4: Simplify right side
   359,979.50x = 598,117,397,780.25
5. Step 5: Solve for x
   x = 598,117,397,780.25/359,979.50
6. Step 6: Final answer
   x = 1,661,531.83