Finding the Third Proportional to 574,258.50 and 843,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   574,258.50 : 843,628.50 = 843,628.50 : x
2. Step 2: Convert to fraction form
   574,258.50/843,628.50 = 843,628.50/x
3. Step 3: Cross multiply
   574,258.50x = 843,628.50 × 843,628.50
4. Step 4: Simplify right side
   574,258.50x = 711,709,046,012.25
5. Step 5: Solve for x
   x = 711,709,046,012.25/574,258.50
6. Step 6: Final answer
   x = 1,239,353.09