Finding the Third Proportional to 870,842 and 1,345,090

Step by Step Solution

1. Step 1: Write the proportion equation
   870,842 : 1,345,090 = 1,345,090 : x
2. Step 2: Convert to fraction form
   870,842/1,345,090 = 1,345,090/x
3. Step 3: Cross multiply
   870,842x = 1,345,090 × 1,345,090
4. Step 4: Simplify right side
   870,842x = 1,809,267,108,100
5. Step 5: Solve for x
   x = 1,809,267,108,100/870,842
6. Step 6: Final answer
   x = 2,077,606.62