Finding the Third Proportional to 28,213 and 42,874

Step by Step Solution

1. Step 1: Write the proportion equation
   28,213 : 42,874 = 42,874 : x
2. Step 2: Convert to fraction form
   28,213/42,874 = 42,874/x
3. Step 3: Cross multiply
   28,213x = 42,874 × 42,874
4. Step 4: Simplify right side
   28,213x = 1,838,179,876
5. Step 5: Solve for x
   x = 1,838,179,876/28,213
6. Step 6: Final answer
   x = 65,153.65