Finding the Third Proportional to 419,406 and 912,540

Step by Step Solution

1. Step 1: Write the proportion equation
   419,406 : 912,540 = 912,540 : x
2. Step 2: Convert to fraction form
   419,406/912,540 = 912,540/x
3. Step 3: Cross multiply
   419,406x = 912,540 × 912,540
4. Step 4: Simplify right side
   419,406x = 832,729,251,600
5. Step 5: Solve for x
   x = 832,729,251,600/419,406
6. Step 6: Final answer
   x = 1,985,496.75