Finding the Third Proportional to 419,388 and 912,504

Step by Step Solution

1. Step 1: Write the proportion equation
   419,388 : 912,504 = 912,504 : x
2. Step 2: Convert to fraction form
   419,388/912,504 = 912,504/x
3. Step 3: Cross multiply
   419,388x = 912,504 × 912,504
4. Step 4: Simplify right side
   419,388x = 832,663,550,016
5. Step 5: Solve for x
   x = 832,663,550,016/419,388
6. Step 6: Final answer
   x = 1,985,425.31