Finding the Third Proportional to 905,580 and 1,968,408

Step by Step Solution

1. Step 1: Write the proportion equation
   905,580 : 1,968,408 = 1,968,408 : x
2. Step 2: Convert to fraction form
   905,580/1,968,408 = 1,968,408/x
3. Step 3: Cross multiply
   905,580x = 1,968,408 × 1,968,408
4. Step 4: Simplify right side
   905,580x = 3,874,630,054,464
5. Step 5: Solve for x
   x = 3,874,630,054,464/905,580
6. Step 6: Final answer
   x = 4,278,617.08