Finding the Third Proportional to 450,432 and 989,455.50

Step by Step Solution

1. Step 1: Write the proportion equation
   450,432 : 989,455.50 = 989,455.50 : x
2. Step 2: Convert to fraction form
   450,432/989,455.50 = 989,455.50/x
3. Step 3: Cross multiply
   450,432x = 989,455.50 × 989,455.50
4. Step 4: Simplify right side
   450,432x = 979,022,186,480.25
5. Step 5: Solve for x
   x = 979,022,186,480.25/450,432
6. Step 6: Final answer
   x = 2,173,518.28