Finding the Third Proportional to 42,168 and 59,328

Step by Step Solution

1. Step 1: Write the proportion equation
   42,168 : 59,328 = 59,328 : x
2. Step 2: Convert to fraction form
   42,168/59,328 = 59,328/x
3. Step 3: Cross multiply
   42,168x = 59,328 × 59,328
4. Step 4: Simplify right side
   42,168x = 3,519,811,584
5. Step 5: Solve for x
   x = 3,519,811,584/42,168
6. Step 6: Final answer
   x = 83,471.15