Finding the Third Proportional to 28,543.50 and 67,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,543.50 : 67,099.50 = 67,099.50 : x
2. Step 2: Convert to fraction form
   28,543.50/67,099.50 = 67,099.50/x
3. Step 3: Cross multiply
   28,543.50x = 67,099.50 × 67,099.50
4. Step 4: Simplify right side
   28,543.50x = 4,502,342,900.25
5. Step 5: Solve for x
   x = 4,502,342,900.25/28,543.50
6. Step 6: Final answer
   x = 157,736.19