Finding the Third Proportional to 28,270 and 42,408

Step by Step Solution

1. Step 1: Write the proportion equation
   28,270 : 42,408 = 42,408 : x
2. Step 2: Convert to fraction form
   28,270/42,408 = 42,408/x
3. Step 3: Cross multiply
   28,270x = 42,408 × 42,408
4. Step 4: Simplify right side
   28,270x = 1,798,438,464
5. Step 5: Solve for x
   x = 1,798,438,464/28,270
6. Step 6: Final answer
   x = 63,616.50