Finding the Third Proportional to 138,219 and 301,449

Step by Step Solution

1. Step 1: Write the proportion equation
   138,219 : 301,449 = 301,449 : x
2. Step 2: Convert to fraction form
   138,219/301,449 = 301,449/x
3. Step 3: Cross multiply
   138,219x = 301,449 × 301,449
4. Step 4: Simplify right side
   138,219x = 90,871,499,601
5. Step 5: Solve for x
   x = 90,871,499,601/138,219
6. Step 6: Final answer
   x = 657,445.79