Finding the Third Proportional to 639,968 and 1,371,016

Step by Step Solution

1. Step 1: Write the proportion equation
   639,968 : 1,371,016 = 1,371,016 : x
2. Step 2: Convert to fraction form
   639,968/1,371,016 = 1,371,016/x
3. Step 3: Cross multiply
   639,968x = 1,371,016 × 1,371,016
4. Step 4: Simplify right side
   639,968x = 1,879,684,872,256
5. Step 5: Solve for x
   x = 1,879,684,872,256/639,968
6. Step 6: Final answer
   x = 2,937,154.47