Finding the Third Proportional to 449,340 and 978,030

Step by Step Solution

1. Step 1: Write the proportion equation
   449,340 : 978,030 = 978,030 : x
2. Step 2: Convert to fraction form
   449,340/978,030 = 978,030/x
3. Step 3: Cross multiply
   449,340x = 978,030 × 978,030
4. Step 4: Simplify right side
   449,340x = 956,542,680,900
5. Step 5: Solve for x
   x = 956,542,680,900/449,340
6. Step 6: Final answer
   x = 2,128,772.60