Finding the Third Proportional to 1,913,161 and 4,199,521

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913,161 : 4,199,521 = 4,199,521 : x
2. Step 2: Convert to fraction form
   1,913,161/4,199,521 = 4,199,521/x
3. Step 3: Cross multiply
   1,913,161x = 4,199,521 × 4,199,521
4. Step 4: Simplify right side
   1,913,161x = 17,635,976,629,441
5. Step 5: Solve for x
   x = 17,635,976,629,441/1,913,161
6. Step 6: Final answer
   x = 9,218,239.67