Finding the Third Proportional to 602,858 and 820,994

Step by Step Solution

1. Step 1: Write the proportion equation
   602,858 : 820,994 = 820,994 : x
2. Step 2: Convert to fraction form
   602,858/820,994 = 820,994/x
3. Step 3: Cross multiply
   602,858x = 820,994 × 820,994
4. Step 4: Simplify right side
   602,858x = 674,031,148,036
5. Step 5: Solve for x
   x = 674,031,148,036/602,858
6. Step 6: Final answer
   x = 1,118,059.56