Finding the Third Proportional to 3,273,858 and 7,142,418

Step by Step Solution

1. Step 1: Write the proportion equation
   3,273,858 : 7,142,418 = 7,142,418 : x
2. Step 2: Convert to fraction form
   3,273,858/7,142,418 = 7,142,418/x
3. Step 3: Cross multiply
   3,273,858x = 7,142,418 × 7,142,418
4. Step 4: Simplify right side
   3,273,858x = 51,014,134,886,724
5. Step 5: Solve for x
   x = 51,014,134,886,724/3,273,858
6. Step 6: Final answer
   x = 15,582,268.65