Finding the Third Proportional to 518,345 and 773,519.50

Step by Step Solution

1. Step 1: Write the proportion equation
   518,345 : 773,519.50 = 773,519.50 : x
2. Step 2: Convert to fraction form
   518,345/773,519.50 = 773,519.50/x
3. Step 3: Cross multiply
   518,345x = 773,519.50 × 773,519.50
4. Step 4: Simplify right side
   518,345x = 598,332,416,880.25
5. Step 5: Solve for x
   x = 598,332,416,880.25/518,345
6. Step 6: Final answer
   x = 1,154,313.09