Finding the Third Proportional to 1,397,553 and 2,978,130

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,553 : 2,978,130 = 2,978,130 : x
2. Step 2: Convert to fraction form
   1,397,553/2,978,130 = 2,978,130/x
3. Step 3: Cross multiply
   1,397,553x = 2,978,130 × 2,978,130
4. Step 4: Simplify right side
   1,397,553x = 8,869,258,296,900
5. Step 5: Solve for x
   x = 8,869,258,296,900/1,397,553
6. Step 6: Final answer
   x = 6,346,276.88