Finding the Third Proportional to 1,306,040 and 1,978,776

Step by Step Solution

1. Step 1: Write the proportion equation
   1,306,040 : 1,978,776 = 1,978,776 : x
2. Step 2: Convert to fraction form
   1,306,040/1,978,776 = 1,978,776/x
3. Step 3: Cross multiply
   1,306,040x = 1,978,776 × 1,978,776
4. Step 4: Simplify right side
   1,306,040x = 3,915,554,458,176
5. Step 5: Solve for x
   x = 3,915,554,458,176/1,306,040
6. Step 6: Final answer
   x = 2,998,035.63