Finding the Third Proportional to 28,072 and 42,563

Step by Step Solution

1. Step 1: Write the proportion equation
   28,072 : 42,563 = 42,563 : x
2. Step 2: Convert to fraction form
   28,072/42,563 = 42,563/x
3. Step 3: Cross multiply
   28,072x = 42,563 × 42,563
4. Step 4: Simplify right side
   28,072x = 1,811,608,969
5. Step 5: Solve for x
   x = 1,811,608,969/28,072
6. Step 6: Final answer
   x = 64,534.37