Finding the Third Proportional to 28,622 and 42,105

Step by Step Solution

1. Step 1: Write the proportion equation
   28,622 : 42,105 = 42,105 : x
2. Step 2: Convert to fraction form
   28,622/42,105 = 42,105/x
3. Step 3: Cross multiply
   28,622x = 42,105 × 42,105
4. Step 4: Simplify right side
   28,622x = 1,772,831,025
5. Step 5: Solve for x
   x = 1,772,831,025/28,622
6. Step 6: Final answer
   x = 61,939.45