Finding the Third Proportional to 67,821.75 and 141,840

Step by Step Solution

1. Step 1: Write the proportion equation
   67,821.75 : 141,840 = 141,840 : x
2. Step 2: Convert to fraction form
   67,821.75/141,840 = 141,840/x
3. Step 3: Cross multiply
   67,821.75x = 141,840 × 141,840
4. Step 4: Simplify right side
   67,821.75x = 20,118,585,600
5. Step 5: Solve for x
   x = 20,118,585,600/67,821.75
6. Step 6: Final answer
   x = 296,639.14