Finding the Third Proportional to 1,321,920 and 1,783,583

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,920 : 1,783,583 = 1,783,583 : x
2. Step 2: Convert to fraction form
   1,321,920/1,783,583 = 1,783,583/x
3. Step 3: Cross multiply
   1,321,920x = 1,783,583 × 1,783,583
4. Step 4: Simplify right side
   1,321,920x = 3,181,168,317,889
5. Step 5: Solve for x
   x = 3,181,168,317,889/1,321,920
6. Step 6: Final answer
   x = 2,406,475.67