Finding the Third Proportional to 28,191 and 42,399

Step by Step Solution

1. Step 1: Write the proportion equation
   28,191 : 42,399 = 42,399 : x
2. Step 2: Convert to fraction form
   28,191/42,399 = 42,399/x
3. Step 3: Cross multiply
   28,191x = 42,399 × 42,399
4. Step 4: Simplify right side
   28,191x = 1,797,675,201
5. Step 5: Solve for x
   x = 1,797,675,201/28,191
6. Step 6: Final answer
   x = 63,767.70