Finding the Third Proportional to 42,960 and 61,876

Step by Step Solution

1. Step 1: Write the proportion equation
   42,960 : 61,876 = 61,876 : x
2. Step 2: Convert to fraction form
   42,960/61,876 = 61,876/x
3. Step 3: Cross multiply
   42,960x = 61,876 × 61,876
4. Step 4: Simplify right side
   42,960x = 3,828,639,376
5. Step 5: Solve for x
   x = 3,828,639,376/42,960
6. Step 6: Final answer
   x = 89,121.03