Finding the Third Proportional to 67,621.50 and 144,624

Step by Step Solution

1. Step 1: Write the proportion equation
   67,621.50 : 144,624 = 144,624 : x
2. Step 2: Convert to fraction form
   67,621.50/144,624 = 144,624/x
3. Step 3: Cross multiply
   67,621.50x = 144,624 × 144,624
4. Step 4: Simplify right side
   67,621.50x = 20,916,101,376
5. Step 5: Solve for x
   x = 20,916,101,376/67,621.50
6. Step 6: Final answer
   x = 309,311.41