Finding the Third Proportional to 1,198,170 and 2,564,820

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198,170 : 2,564,820 = 2,564,820 : x
2. Step 2: Convert to fraction form
   1,198,170/2,564,820 = 2,564,820/x
3. Step 3: Cross multiply
   1,198,170x = 2,564,820 × 2,564,820
4. Step 4: Simplify right side
   1,198,170x = 6,578,301,632,400
5. Step 5: Solve for x
   x = 6,578,301,632,400/1,198,170
6. Step 6: Final answer
   x = 5,490,290.72