Finding the Third Proportional to 67,419 and 105,178.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,419 : 105,178.50 = 105,178.50 : x
2. Step 2: Convert to fraction form
   67,419/105,178.50 = 105,178.50/x
3. Step 3: Cross multiply
   67,419x = 105,178.50 × 105,178.50
4. Step 4: Simplify right side
   67,419x = 11,062,516,862.25
5. Step 5: Solve for x
   x = 11,062,516,862.25/67,419
6. Step 6: Final answer
   x = 164,086.04