Finding the Third Proportional to 915,636 and 1,389,006

Step by Step Solution

1. Step 1: Write the proportion equation
   915,636 : 1,389,006 = 1,389,006 : x
2. Step 2: Convert to fraction form
   915,636/1,389,006 = 1,389,006/x
3. Step 3: Cross multiply
   915,636x = 1,389,006 × 1,389,006
4. Step 4: Simplify right side
   915,636x = 1,929,337,668,036
5. Step 5: Solve for x
   x = 1,929,337,668,036/915,636
6. Step 6: Final answer
   x = 2,107,101.15