Finding the Third Proportional to 819,642 and 1,265,816

Step by Step Solution

1. Step 1: Write the proportion equation
   819,642 : 1,265,816 = 1,265,816 : x
2. Step 2: Convert to fraction form
   819,642/1,265,816 = 1,265,816/x
3. Step 3: Cross multiply
   819,642x = 1,265,816 × 1,265,816
4. Step 4: Simplify right side
   819,642x = 1,602,290,145,856
5. Step 5: Solve for x
   x = 1,602,290,145,856/819,642
6. Step 6: Final answer
   x = 1,954,865.84