Finding the Third Proportional to 424,147.50 and 877,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   424,147.50 : 877,819.50 = 877,819.50 : x
2. Step 2: Convert to fraction form
   424,147.50/877,819.50 = 877,819.50/x
3. Step 3: Cross multiply
   424,147.50x = 877,819.50 × 877,819.50
4. Step 4: Simplify right side
   424,147.50x = 770,567,074,580.25
5. Step 5: Solve for x
   x = 770,567,074,580.25/424,147.50
6. Step 6: Final answer
   x = 1,816,743.17