Finding the Third Proportional to 870,790 and 1,345,020

Step by Step Solution

1. Step 1: Write the proportion equation
   870,790 : 1,345,020 = 1,345,020 : x
2. Step 2: Convert to fraction form
   870,790/1,345,020 = 1,345,020/x
3. Step 3: Cross multiply
   870,790x = 1,345,020 × 1,345,020
4. Step 4: Simplify right side
   870,790x = 1,809,078,800,400
5. Step 5: Solve for x
   x = 1,809,078,800,400/870,790
6. Step 6: Final answer
   x = 2,077,514.44