Finding the Third Proportional to 455,355 and 989,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   455,355 : 989,440.50 = 989,440.50 : x
2. Step 2: Convert to fraction form
   455,355/989,440.50 = 989,440.50/x
3. Step 3: Cross multiply
   455,355x = 989,440.50 × 989,440.50
4. Step 4: Simplify right side
   455,355x = 978,992,503,040.25
5. Step 5: Solve for x
   x = 978,992,503,040.25/455,355
6. Step 6: Final answer
   x = 2,149,954.44