Finding the Third Proportional to 1,035,636 and 1,399,211

Step by Step Solution

1. Step 1: Write the proportion equation
   1,035,636 : 1,399,211 = 1,399,211 : x
2. Step 2: Convert to fraction form
   1,035,636/1,399,211 = 1,399,211/x
3. Step 3: Cross multiply
   1,035,636x = 1,399,211 × 1,399,211
4. Step 4: Simplify right side
   1,035,636x = 1,957,791,422,521
5. Step 5: Solve for x
   x = 1,957,791,422,521/1,035,636
6. Step 6: Final answer
   x = 1,890,424.26