Finding the Third Proportional to 65,742 and 141,990

Step by Step Solution

1. Step 1: Write the proportion equation
   65,742 : 141,990 = 141,990 : x
2. Step 2: Convert to fraction form
   65,742/141,990 = 141,990/x
3. Step 3: Cross multiply
   65,742x = 141,990 × 141,990
4. Step 4: Simplify right side
   65,742x = 20,161,160,100
5. Step 5: Solve for x
   x = 20,161,160,100/65,742
6. Step 6: Final answer
   x = 306,670.93