Finding the Third Proportional to 28,137 and 42,318

Step by Step Solution

1. Step 1: Write the proportion equation
   28,137 : 42,318 = 42,318 : x
2. Step 2: Convert to fraction form
   28,137/42,318 = 42,318/x
3. Step 3: Cross multiply
   28,137x = 42,318 × 42,318
4. Step 4: Simplify right side
   28,137x = 1,790,813,124
5. Step 5: Solve for x
   x = 1,790,813,124/28,137
6. Step 6: Final answer
   x = 63,646.20