Finding the Third Proportional to 1,778,588 and 2,662,991

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778,588 : 2,662,991 = 2,662,991 : x
2. Step 2: Convert to fraction form
   1,778,588/2,662,991 = 2,662,991/x
3. Step 3: Cross multiply
   1,778,588x = 2,662,991 × 2,662,991
4. Step 4: Simplify right side
   1,778,588x = 7,091,521,066,081
5. Step 5: Solve for x
   x = 7,091,521,066,081/1,778,588
6. Step 6: Final answer
   x = 3,987,163.45