Finding the Third Proportional to 42,105 and 67,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,105 : 67,099.50 = 67,099.50 : x
2. Step 2: Convert to fraction form
   42,105/67,099.50 = 67,099.50/x
3. Step 3: Cross multiply
   42,105x = 67,099.50 × 67,099.50
4. Step 4: Simplify right side
   42,105x = 4,502,342,900.25
5. Step 5: Solve for x
   x = 4,502,342,900.25/42,105
6. Step 6: Final answer
   x = 106,931.31