Finding the Third Proportional to 273,168 and 427,569.75

Step by Step Solution

1. Step 1: Write the proportion equation
   273,168 : 427,569.75 = 427,569.75 : x
2. Step 2: Convert to fraction form
   273,168/427,569.75 = 427,569.75/x
3. Step 3: Cross multiply
   273,168x = 427,569.75 × 427,569.75
4. Step 4: Simplify right side
   273,168x = 182,815,891,115.06
5. Step 5: Solve for x
   x = 182,815,891,115.06/273,168
6. Step 6: Final answer
   x = 669,243.44