Finding the Third Proportional to 1,390,548 and 2,149,662

Step by Step Solution

1. Step 1: Write the proportion equation
   1,390,548 : 2,149,662 = 2,149,662 : x
2. Step 2: Convert to fraction form
   1,390,548/2,149,662 = 2,149,662/x
3. Step 3: Cross multiply
   1,390,548x = 2,149,662 × 2,149,662
4. Step 4: Simplify right side
   1,390,548x = 4,621,046,714,244
5. Step 5: Solve for x
   x = 4,621,046,714,244/1,390,548
6. Step 6: Final answer
   x = 3,323,183.89