Finding the Third Proportional to 639,719 and 1,368,010

Step by Step Solution

1. Step 1: Write the proportion equation
   639,719 : 1,368,010 = 1,368,010 : x
2. Step 2: Convert to fraction form
   639,719/1,368,010 = 1,368,010/x
3. Step 3: Cross multiply
   639,719x = 1,368,010 × 1,368,010
4. Step 4: Simplify right side
   639,719x = 1,871,451,360,100
5. Step 5: Solve for x
   x = 1,871,451,360,100/639,719
6. Step 6: Final answer
   x = 2,925,427.20