Finding the Third Proportional to 552,071.50 and 809,880.50

Step by Step Solution

1. Step 1: Write the proportion equation
   552,071.50 : 809,880.50 = 809,880.50 : x
2. Step 2: Convert to fraction form
   552,071.50/809,880.50 = 809,880.50/x
3. Step 3: Cross multiply
   552,071.50x = 809,880.50 × 809,880.50
4. Step 4: Simplify right side
   552,071.50x = 655,906,424,280.25
5. Step 5: Solve for x
   x = 655,906,424,280.25/552,071.50
6. Step 6: Final answer
   x = 1,188,082.38