Finding the Third Proportional to 67,410 and 143,554.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,410 : 143,554.50 = 143,554.50 : x
2. Step 2: Convert to fraction form
   67,410/143,554.50 = 143,554.50/x
3. Step 3: Cross multiply
   67,410x = 143,554.50 × 143,554.50
4. Step 4: Simplify right side
   67,410x = 20,607,894,470.25
5. Step 5: Solve for x
   x = 20,607,894,470.25/67,410
6. Step 6: Final answer
   x = 305,709.75