Finding the Third Proportional to 42,692 and 67,881

Step by Step Solution

1. Step 1: Write the proportion equation
   42,692 : 67,881 = 67,881 : x
2. Step 2: Convert to fraction form
   42,692/67,881 = 67,881/x
3. Step 3: Cross multiply
   42,692x = 67,881 × 67,881
4. Step 4: Simplify right side
   42,692x = 4,607,830,161
5. Step 5: Solve for x
   x = 4,607,830,161/42,692
6. Step 6: Final answer
   x = 107,931.93