Finding the Third Proportional to 602,778 and 818,650.50

Step by Step Solution

1. Step 1: Write the proportion equation
   602,778 : 818,650.50 = 818,650.50 : x
2. Step 2: Convert to fraction form
   602,778/818,650.50 = 818,650.50/x
3. Step 3: Cross multiply
   602,778x = 818,650.50 × 818,650.50
4. Step 4: Simplify right side
   602,778x = 670,188,641,150.25
5. Step 5: Solve for x
   x = 670,188,641,150.25/602,778
6. Step 6: Final answer
   x = 1,111,833.28