Finding the Third Proportional to 728,463 and 1,105,816.50

Step by Step Solution

1. Step 1: Write the proportion equation
   728,463 : 1,105,816.50 = 1,105,816.50 : x
2. Step 2: Convert to fraction form
   728,463/1,105,816.50 = 1,105,816.50/x
3. Step 3: Cross multiply
   728,463x = 1,105,816.50 × 1,105,816.50
4. Step 4: Simplify right side
   728,463x = 1,222,830,131,672.25
5. Step 5: Solve for x
   x = 1,222,830,131,672.25/728,463
6. Step 6: Final answer
   x = 1,678,644.12