Finding the Third Proportional to 142,474 and 221,482.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,474 : 221,482.50 = 221,482.50 : x
2. Step 2: Convert to fraction form
   142,474/221,482.50 = 221,482.50/x
3. Step 3: Cross multiply
   142,474x = 221,482.50 × 221,482.50
4. Step 4: Simplify right side
   142,474x = 49,054,497,806.25
5. Step 5: Solve for x
   x = 49,054,497,806.25/142,474
6. Step 6: Final answer
   x = 344,304.91