Finding the Third Proportional to 1,171,620 and 2,557,080

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171,620 : 2,557,080 = 2,557,080 : x
2. Step 2: Convert to fraction form
   1,171,620/2,557,080 = 2,557,080/x
3. Step 3: Cross multiply
   1,171,620x = 2,557,080 × 2,557,080
4. Step 4: Simplify right side
   1,171,620x = 6,538,658,126,400
5. Step 5: Solve for x
   x = 6,538,658,126,400/1,171,620
6. Step 6: Final answer
   x = 5,580,869.33