Finding the Third Proportional to 578,456 and 1,245,730

Step by Step Solution

1. Step 1: Write the proportion equation
   578,456 : 1,245,730 = 1,245,730 : x
2. Step 2: Convert to fraction form
   578,456/1,245,730 = 1,245,730/x
3. Step 3: Cross multiply
   578,456x = 1,245,730 × 1,245,730
4. Step 4: Simplify right side
   578,456x = 1,551,843,232,900
5. Step 5: Solve for x
   x = 1,551,843,232,900/578,456
6. Step 6: Final answer
   x = 2,682,733.40