Finding the Third Proportional to 359,859 and 518,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,859 : 518,404.50 = 518,404.50 : x
2. Step 2: Convert to fraction form
   359,859/518,404.50 = 518,404.50/x
3. Step 3: Cross multiply
   359,859x = 518,404.50 × 518,404.50
4. Step 4: Simplify right side
   359,859x = 268,743,225,620.25
5. Step 5: Solve for x
   x = 268,743,225,620.25/359,859
6. Step 6: Final answer
   x = 746,801.46