Finding the Third Proportional to 419,539.50 and 905,418

Step by Step Solution

1. Step 1: Write the proportion equation
   419,539.50 : 905,418 = 905,418 : x
2. Step 2: Convert to fraction form
   419,539.50/905,418 = 905,418/x
3. Step 3: Cross multiply
   419,539.50x = 905,418 × 905,418
4. Step 4: Simplify right side
   419,539.50x = 819,781,754,724
5. Step 5: Solve for x
   x = 819,781,754,724/419,539.50
6. Step 6: Final answer
   x = 1,954,003.75