Finding the Third Proportional to 684,911 and 1,090,790

Step by Step Solution

1. Step 1: Write the proportion equation
   684,911 : 1,090,790 = 1,090,790 : x
2. Step 2: Convert to fraction form
   684,911/1,090,790 = 1,090,790/x
3. Step 3: Cross multiply
   684,911x = 1,090,790 × 1,090,790
4. Step 4: Simplify right side
   684,911x = 1,189,822,824,100
5. Step 5: Solve for x
   x = 1,189,822,824,100/684,911
6. Step 6: Final answer
   x = 1,737,193.33