Finding the Third Proportional to 604,503 and 818,059.50

Step by Step Solution

1. Step 1: Write the proportion equation
   604,503 : 818,059.50 = 818,059.50 : x
2. Step 2: Convert to fraction form
   604,503/818,059.50 = 818,059.50/x
3. Step 3: Cross multiply
   604,503x = 818,059.50 × 818,059.50
4. Step 4: Simplify right side
   604,503x = 669,221,345,540.25
5. Step 5: Solve for x
   x = 669,221,345,540.25/604,503
6. Step 6: Final answer
   x = 1,107,060.42