Finding the Third Proportional to 630,990 and 1,368,443

Step by Step Solution

1. Step 1: Write the proportion equation
   630,990 : 1,368,443 = 1,368,443 : x
2. Step 2: Convert to fraction form
   630,990/1,368,443 = 1,368,443/x
3. Step 3: Cross multiply
   630,990x = 1,368,443 × 1,368,443
4. Step 4: Simplify right side
   630,990x = 1,872,636,244,249
5. Step 5: Solve for x
   x = 1,872,636,244,249/630,990
6. Step 6: Final answer
   x = 2,967,774.84