Finding the Third Proportional to 28,628 and 42,777

Step by Step Solution

1. Step 1: Write the proportion equation
   28,628 : 42,777 = 42,777 : x
2. Step 2: Convert to fraction form
   28,628/42,777 = 42,777/x
3. Step 3: Cross multiply
   28,628x = 42,777 × 42,777
4. Step 4: Simplify right side
   28,628x = 1,829,871,729
5. Step 5: Solve for x
   x = 1,829,871,729/28,628
6. Step 6: Final answer
   x = 63,918.95