Finding the Third Proportional to 648,915 and 1,397,667

Step by Step Solution

1. Step 1: Write the proportion equation
   648,915 : 1,397,667 = 1,397,667 : x
2. Step 2: Convert to fraction form
   648,915/1,397,667 = 1,397,667/x
3. Step 3: Cross multiply
   648,915x = 1,397,667 × 1,397,667
4. Step 4: Simplify right side
   648,915x = 1,953,473,042,889
5. Step 5: Solve for x
   x = 1,953,473,042,889/648,915
6. Step 6: Final answer
   x = 3,010,368.14