Finding the Third Proportional to 65,703 and 142,503

Step by Step Solution

1. Step 1: Write the proportion equation
   65,703 : 142,503 = 142,503 : x
2. Step 2: Convert to fraction form
   65,703/142,503 = 142,503/x
3. Step 3: Cross multiply
   65,703x = 142,503 × 142,503
4. Step 4: Simplify right side
   65,703x = 20,307,105,009
5. Step 5: Solve for x
   x = 20,307,105,009/65,703
6. Step 6: Final answer
   x = 309,074.24