Finding the Third Proportional to 728,385 and 1,142,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   728,385 : 1,142,620.50 = 1,142,620.50 : x
2. Step 2: Convert to fraction form
   728,385/1,142,620.50 = 1,142,620.50/x
3. Step 3: Cross multiply
   728,385x = 1,142,620.50 × 1,142,620.50
4. Step 4: Simplify right side
   728,385x = 1,305,581,607,020.25
5. Step 5: Solve for x
   x = 1,305,581,607,020.25/728,385
6. Step 6: Final answer
   x = 1,792,433.41