Finding the Third Proportional to 1,397,554 and 2,978,132

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,554 : 2,978,132 = 2,978,132 : x
2. Step 2: Convert to fraction form
   1,397,554/2,978,132 = 2,978,132/x
3. Step 3: Cross multiply
   1,397,554x = 2,978,132 × 2,978,132
4. Step 4: Simplify right side
   1,397,554x = 8,869,270,209,424
5. Step 5: Solve for x
   x = 8,869,270,209,424/1,397,554
6. Step 6: Final answer
   x = 6,346,280.87