Finding the Third Proportional to 684,912.50 and 1,090,791.50

Step by Step Solution

1. Step 1: Write the proportion equation
   684,912.50 : 1,090,791.50 = 1,090,791.50 : x
2. Step 2: Convert to fraction form
   684,912.50/1,090,791.50 = 1,090,791.50/x
3. Step 3: Cross multiply
   684,912.50x = 1,090,791.50 × 1,090,791.50
4. Step 4: Simplify right side
   684,912.50x = 1,189,826,096,472.25
5. Step 5: Solve for x
   x = 1,189,826,096,472.25/684,912.50
6. Step 6: Final answer
   x = 1,737,194.31