Finding the Third Proportional to 1,034,710 and 1,390,469

Step by Step Solution

1. Step 1: Write the proportion equation
   1,034,710 : 1,390,469 = 1,390,469 : x
2. Step 2: Convert to fraction form
   1,034,710/1,390,469 = 1,390,469/x
3. Step 3: Cross multiply
   1,034,710x = 1,390,469 × 1,390,469
4. Step 4: Simplify right side
   1,034,710x = 1,933,404,039,961
5. Step 5: Solve for x
   x = 1,933,404,039,961/1,034,710
6. Step 6: Final answer
   x = 1,868,546.78