Finding the Third Proportional to 67,489.50 and 147,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,489.50 : 147,691.50 = 147,691.50 : x
2. Step 2: Convert to fraction form
   67,489.50/147,691.50 = 147,691.50/x
3. Step 3: Cross multiply
   67,489.50x = 147,691.50 × 147,691.50
4. Step 4: Simplify right side
   67,489.50x = 21,812,779,172.25
5. Step 5: Solve for x
   x = 21,812,779,172.25/67,489.50
6. Step 6: Final answer
   x = 323,202.56