Finding the Third Proportional to 684,916 and 1,090,800

Step by Step Solution

1. Step 1: Write the proportion equation
   684,916 : 1,090,800 = 1,090,800 : x
2. Step 2: Convert to fraction form
   684,916/1,090,800 = 1,090,800/x
3. Step 3: Cross multiply
   684,916x = 1,090,800 × 1,090,800
4. Step 4: Simplify right side
   684,916x = 1,189,844,640,000
5. Step 5: Solve for x
   x = 1,189,844,640,000/684,916
6. Step 6: Final answer
   x = 1,737,212.50