Finding the Third Proportional to 2,578,190 and 5,615,164

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,190 : 5,615,164 = 5,615,164 : x
2. Step 2: Convert to fraction form
   2,578,190/5,615,164 = 5,615,164/x
3. Step 3: Cross multiply
   2,578,190x = 5,615,164 × 5,615,164
4. Step 4: Simplify right side
   2,578,190x = 31,530,066,746,896
5. Step 5: Solve for x
   x = 31,530,066,746,896/2,578,190
6. Step 6: Final answer
   x = 12,229,535.74