Finding the Third Proportional to 67,811 and 98,638.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,811 : 98,638.50 = 98,638.50 : x
2. Step 2: Convert to fraction form
   67,811/98,638.50 = 98,638.50/x
3. Step 3: Cross multiply
   67,811x = 98,638.50 × 98,638.50
4. Step 4: Simplify right side
   67,811x = 9,729,553,682.25
5. Step 5: Solve for x
   x = 9,729,553,682.25/67,811
6. Step 6: Final answer
   x = 143,480.46