Finding the Third Proportional to 1,391,427 and 3,009,978

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391,427 : 3,009,978 = 3,009,978 : x
2. Step 2: Convert to fraction form
   1,391,427/3,009,978 = 3,009,978/x
3. Step 3: Cross multiply
   1,391,427x = 3,009,978 × 3,009,978
4. Step 4: Simplify right side
   1,391,427x = 9,059,967,560,484
5. Step 5: Solve for x
   x = 9,059,967,560,484/1,391,427
6. Step 6: Final answer
   x = 6,511,277.67