Finding the Third Proportional to 573,138 and 1,245,780

Step by Step Solution

1. Step 1: Write the proportion equation
   573,138 : 1,245,780 = 1,245,780 : x
2. Step 2: Convert to fraction form
   573,138/1,245,780 = 1,245,780/x
3. Step 3: Cross multiply
   573,138x = 1,245,780 × 1,245,780
4. Step 4: Simplify right side
   573,138x = 1,551,967,808,400
5. Step 5: Solve for x
   x = 1,551,967,808,400/573,138
6. Step 6: Final answer
   x = 2,707,843.15