Finding the Third Proportional to 42,938 and 68,366.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,938 : 68,366.50 = 68,366.50 : x
2. Step 2: Convert to fraction form
   42,938/68,366.50 = 68,366.50/x
3. Step 3: Cross multiply
   42,938x = 68,366.50 × 68,366.50
4. Step 4: Simplify right side
   42,938x = 4,673,978,322.25
5. Step 5: Solve for x
   x = 4,673,978,322.25/42,938
6. Step 6: Final answer
   x = 108,854.12