Finding the Third Proportional to 450,650 and 989,428

Step by Step Solution

1. Step 1: Write the proportion equation
   450,650 : 989,428 = 989,428 : x
2. Step 2: Convert to fraction form
   450,650/989,428 = 989,428/x
3. Step 3: Cross multiply
   450,650x = 989,428 × 989,428
4. Step 4: Simplify right side
   450,650x = 978,967,767,184
5. Step 5: Solve for x
   x = 978,967,767,184/450,650
6. Step 6: Final answer
   x = 2,172,346.09