Finding the Third Proportional to 510,879 and 773,392.50

Step by Step Solution

1. Step 1: Write the proportion equation
   510,879 : 773,392.50 = 773,392.50 : x
2. Step 2: Convert to fraction form
   510,879/773,392.50 = 773,392.50/x
3. Step 3: Cross multiply
   510,879x = 773,392.50 × 773,392.50
4. Step 4: Simplify right side
   510,879x = 598,135,959,056.25
5. Step 5: Solve for x
   x = 598,135,959,056.25/510,879
6. Step 6: Final answer
   x = 1,170,797.70