Finding the Third Proportional to 221,760 and 475,272

Step by Step Solution

1. Step 1: Write the proportion equation
   221,760 : 475,272 = 475,272 : x
2. Step 2: Convert to fraction form
   221,760/475,272 = 475,272/x
3. Step 3: Cross multiply
   221,760x = 475,272 × 475,272
4. Step 4: Simplify right side
   221,760x = 225,883,473,984
5. Step 5: Solve for x
   x = 225,883,473,984/221,760
6. Step 6: Final answer
   x = 1,018,594.31