Finding the Third Proportional to 813,968 and 1,245,240

Step by Step Solution

1. Step 1: Write the proportion equation
   813,968 : 1,245,240 = 1,245,240 : x
2. Step 2: Convert to fraction form
   813,968/1,245,240 = 1,245,240/x
3. Step 3: Cross multiply
   813,968x = 1,245,240 × 1,245,240
4. Step 4: Simplify right side
   813,968x = 1,550,622,657,600
5. Step 5: Solve for x
   x = 1,550,622,657,600/813,968
6. Step 6: Final answer
   x = 1,905,016.73