Finding the Third Proportional to 1,321,918.50 and 1,783,578

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,918.50 : 1,783,578 = 1,783,578 : x
2. Step 2: Convert to fraction form
   1,321,918.50/1,783,578 = 1,783,578/x
3. Step 3: Cross multiply
   1,321,918.50x = 1,783,578 × 1,783,578
4. Step 4: Simplify right side
   1,321,918.50x = 3,181,150,482,084
5. Step 5: Solve for x
   x = 3,181,150,482,084/1,321,918.50
6. Step 6: Final answer
   x = 2,406,464.91