Finding the Third Proportional to 359,448 and 550,620

Step by Step Solution

1. Step 1: Write the proportion equation
   359,448 : 550,620 = 550,620 : x
2. Step 2: Convert to fraction form
   359,448/550,620 = 550,620/x
3. Step 3: Cross multiply
   359,448x = 550,620 × 550,620
4. Step 4: Simplify right side
   359,448x = 303,182,384,400
5. Step 5: Solve for x
   x = 303,182,384,400/359,448
6. Step 6: Final answer
   x = 843,466.61