Finding the Third Proportional to 91,287 and 123,201

Step by Step Solution

1. Step 1: Write the proportion equation
   91,287 : 123,201 = 123,201 : x
2. Step 2: Convert to fraction form
   91,287/123,201 = 123,201/x
3. Step 3: Cross multiply
   91,287x = 123,201 × 123,201
4. Step 4: Simplify right side
   91,287x = 15,178,486,401
5. Step 5: Solve for x
   x = 15,178,486,401/91,287
6. Step 6: Final answer
   x = 166,272.16