Finding the Third Proportional to 67,089 and 98,689.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,089 : 98,689.50 = 98,689.50 : x
2. Step 2: Convert to fraction form
   67,089/98,689.50 = 98,689.50/x
3. Step 3: Cross multiply
   67,089x = 98,689.50 × 98,689.50
4. Step 4: Simplify right side
   67,089x = 9,739,617,410.25
5. Step 5: Solve for x
   x = 9,739,617,410.25/67,089
6. Step 6: Final answer
   x = 145,174.58