Finding the Third Proportional to 807,636 and 1,267,120

Step by Step Solution

1. Step 1: Write the proportion equation
   807,636 : 1,267,120 = 1,267,120 : x
2. Step 2: Convert to fraction form
   807,636/1,267,120 = 1,267,120/x
3. Step 3: Cross multiply
   807,636x = 1,267,120 × 1,267,120
4. Step 4: Simplify right side
   807,636x = 1,605,593,094,400
5. Step 5: Solve for x
   x = 1,605,593,094,400/807,636
6. Step 6: Final answer
   x = 1,988,015.76