Finding the Third Proportional to 917,778 and 1,968,411

Step by Step Solution

1. Step 1: Write the proportion equation
   917,778 : 1,968,411 = 1,968,411 : x
2. Step 2: Convert to fraction form
   917,778/1,968,411 = 1,968,411/x
3. Step 3: Cross multiply
   917,778x = 1,968,411 × 1,968,411
4. Step 4: Simplify right side
   917,778x = 3,874,641,864,921
5. Step 5: Solve for x
   x = 3,874,641,864,921/917,778
6. Step 6: Final answer
   x = 4,221,763.72