Finding the Third Proportional to 498,150 and 787,556

Step by Step Solution

1. Step 1: Write the proportion equation
   498,150 : 787,556 = 787,556 : x
2. Step 2: Convert to fraction form
   498,150/787,556 = 787,556/x
3. Step 3: Cross multiply
   498,150x = 787,556 × 787,556
4. Step 4: Simplify right side
   498,150x = 620,244,453,136
5. Step 5: Solve for x
   x = 620,244,453,136/498,150
6. Step 6: Final answer
   x = 1,245,095.76