Finding the Third Proportional to 580,778 and 1,245,630

Step by Step Solution

1. Step 1: Write the proportion equation
   580,778 : 1,245,630 = 1,245,630 : x
2. Step 2: Convert to fraction form
   580,778/1,245,630 = 1,245,630/x
3. Step 3: Cross multiply
   580,778x = 1,245,630 × 1,245,630
4. Step 4: Simplify right side
   580,778x = 1,551,594,096,900
5. Step 5: Solve for x
   x = 1,551,594,096,900/580,778
6. Step 6: Final answer
   x = 2,671,578.64