Finding the Third Proportional to 419,821.50 and 905,979

Step by Step Solution

1. Step 1: Write the proportion equation
   419,821.50 : 905,979 = 905,979 : x
2. Step 2: Convert to fraction form
   419,821.50/905,979 = 905,979/x
3. Step 3: Cross multiply
   419,821.50x = 905,979 × 905,979
4. Step 4: Simplify right side
   419,821.50x = 820,797,948,441
5. Step 5: Solve for x
   x = 820,797,948,441/419,821.50
6. Step 6: Final answer
   x = 1,955,111.75