Finding the Third Proportional to 1,016,989 and 1,379,637

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016,989 : 1,379,637 = 1,379,637 : x
2. Step 2: Convert to fraction form
   1,016,989/1,379,637 = 1,379,637/x
3. Step 3: Cross multiply
   1,016,989x = 1,379,637 × 1,379,637
4. Step 4: Simplify right side
   1,016,989x = 1,903,398,251,769
5. Step 5: Solve for x
   x = 1,903,398,251,769/1,016,989
6. Step 6: Final answer
   x = 1,871,601.61