Finding the Third Proportional to 281,424 and 616,389.75

Step by Step Solution

1. Step 1: Write the proportion equation
   281,424 : 616,389.75 = 616,389.75 : x
2. Step 2: Convert to fraction form
   281,424/616,389.75 = 616,389.75/x
3. Step 3: Cross multiply
   281,424x = 616,389.75 × 616,389.75
4. Step 4: Simplify right side
   281,424x = 379,936,323,905.06
5. Step 5: Solve for x
   x = 379,936,323,905.06/281,424
6. Step 6: Final answer
   x = 1,350,049.48