Finding the Third Proportional to 42,646 and 67,479

Step by Step Solution

1. Step 1: Write the proportion equation
   42,646 : 67,479 = 67,479 : x
2. Step 2: Convert to fraction form
   42,646/67,479 = 67,479/x
3. Step 3: Cross multiply
   42,646x = 67,479 × 67,479
4. Step 4: Simplify right side
   42,646x = 4,553,415,441
5. Step 5: Solve for x
   x = 4,553,415,441/42,646
6. Step 6: Final answer
   x = 106,772.39