Finding the Third Proportional to 42,557 and 67,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,557 : 67,355.50 = 67,355.50 : x
2. Step 2: Convert to fraction form
   42,557/67,355.50 = 67,355.50/x
3. Step 3: Cross multiply
   42,557x = 67,355.50 × 67,355.50
4. Step 4: Simplify right side
   42,557x = 4,536,763,380.25
5. Step 5: Solve for x
   x = 4,536,763,380.25/42,557
6. Step 6: Final answer
   x = 106,604.40