Finding the Third Proportional to 815,320 and 1,666,904

Step by Step Solution

1. Step 1: Write the proportion equation
   815,320 : 1,666,904 = 1,666,904 : x
2. Step 2: Convert to fraction form
   815,320/1,666,904 = 1,666,904/x
3. Step 3: Cross multiply
   815,320x = 1,666,904 × 1,666,904
4. Step 4: Simplify right side
   815,320x = 2,778,568,945,216
5. Step 5: Solve for x
   x = 2,778,568,945,216/815,320
6. Step 6: Final answer
   x = 3,407,948.96