Finding the Third Proportional to 1,515,878 and 2,279,968

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515,878 : 2,279,968 = 2,279,968 : x
2. Step 2: Convert to fraction form
   1,515,878/2,279,968 = 2,279,968/x
3. Step 3: Cross multiply
   1,515,878x = 2,279,968 × 2,279,968
4. Step 4: Simplify right side
   1,515,878x = 5,198,254,081,024
5. Step 5: Solve for x
   x = 5,198,254,081,024/1,515,878
6. Step 6: Final answer
   x = 3,429,203.46