Finding the Third Proportional to 45,172.50 and 67,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,172.50 : 67,105.50 = 67,105.50 : x
2. Step 2: Convert to fraction form
   45,172.50/67,105.50 = 67,105.50/x
3. Step 3: Cross multiply
   45,172.50x = 67,105.50 × 67,105.50
4. Step 4: Simplify right side
   45,172.50x = 4,503,148,130.25
5. Step 5: Solve for x
   x = 4,503,148,130.25/45,172.50
6. Step 6: Final answer
   x = 99,687.82