Finding the Third Proportional to 449,380 and 978,106

Step by Step Solution

1. Step 1: Write the proportion equation
   449,380 : 978,106 = 978,106 : x
2. Step 2: Convert to fraction form
   449,380/978,106 = 978,106/x
3. Step 3: Cross multiply
   449,380x = 978,106 × 978,106
4. Step 4: Simplify right side
   449,380x = 956,691,347,236
5. Step 5: Solve for x
   x = 956,691,347,236/449,380
6. Step 6: Final answer
   x = 2,128,913.94