Finding the Third Proportional to 445,118 and 989,738

Step by Step Solution

1. Step 1: Write the proportion equation
   445,118 : 989,738 = 989,738 : x
2. Step 2: Convert to fraction form
   445,118/989,738 = 989,738/x
3. Step 3: Cross multiply
   445,118x = 989,738 × 989,738
4. Step 4: Simplify right side
   445,118x = 979,581,308,644
5. Step 5: Solve for x
   x = 979,581,308,644/445,118
6. Step 6: Final answer
   x = 2,200,722.75