Finding the Third Proportional to 1,215,112 and 2,658,976

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,112 : 2,658,976 = 2,658,976 : x
2. Step 2: Convert to fraction form
   1,215,112/2,658,976 = 2,658,976/x
3. Step 3: Cross multiply
   1,215,112x = 2,658,976 × 2,658,976
4. Step 4: Simplify right side
   1,215,112x = 7,070,153,368,576
5. Step 5: Solve for x
   x = 7,070,153,368,576/1,215,112
6. Step 6: Final answer
   x = 5,818,519.91