Finding the Third Proportional to 899,918 and 1,265,678

Step by Step Solution

1. Step 1: Write the proportion equation
   899,918 : 1,265,678 = 1,265,678 : x
2. Step 2: Convert to fraction form
   899,918/1,265,678 = 1,265,678/x
3. Step 3: Cross multiply
   899,918x = 1,265,678 × 1,265,678
4. Step 4: Simplify right side
   899,918x = 1,601,940,799,684
5. Step 5: Solve for x
   x = 1,601,940,799,684/899,918
6. Step 6: Final answer
   x = 1,780,096.41