Finding the Third Proportional to 728,465 and 1,105,820

Step by Step Solution

1. Step 1: Write the proportion equation
   728,465 : 1,105,820 = 1,105,820 : x
2. Step 2: Convert to fraction form
   728,465/1,105,820 = 1,105,820/x
3. Step 3: Cross multiply
   728,465x = 1,105,820 × 1,105,820
4. Step 4: Simplify right side
   728,465x = 1,222,837,872,400
5. Step 5: Solve for x
   x = 1,222,837,872,400/728,465
6. Step 6: Final answer
   x = 1,678,650.14