Finding the Third Proportional to 449,386 and 978,118

Step by Step Solution

1. Step 1: Write the proportion equation
   449,386 : 978,118 = 978,118 : x
2. Step 2: Convert to fraction form
   449,386/978,118 = 978,118/x
3. Step 3: Cross multiply
   449,386x = 978,118 × 978,118
4. Step 4: Simplify right side
   449,386x = 956,714,821,924
5. Step 5: Solve for x
   x = 956,714,821,924/449,386
6. Step 6: Final answer
   x = 2,128,937.75