Finding the Third Proportional to 578,503 and 1,245,906

Step by Step Solution

1. Step 1: Write the proportion equation
   578,503 : 1,245,906 = 1,245,906 : x
2. Step 2: Convert to fraction form
   578,503/1,245,906 = 1,245,906/x
3. Step 3: Cross multiply
   578,503x = 1,245,906 × 1,245,906
4. Step 4: Simplify right side
   578,503x = 1,552,281,760,836
5. Step 5: Solve for x
   x = 1,552,281,760,836/578,503
6. Step 6: Final answer
   x = 2,683,273.48