Finding the Third Proportional to 221,760 and 481,428

Step by Step Solution

1. Step 1: Write the proportion equation
   221,760 : 481,428 = 481,428 : x
2. Step 2: Convert to fraction form
   221,760/481,428 = 481,428/x
3. Step 3: Cross multiply
   221,760x = 481,428 × 481,428
4. Step 4: Simplify right side
   221,760x = 231,772,919,184
5. Step 5: Solve for x
   x = 231,772,919,184/221,760
6. Step 6: Final answer
   x = 1,045,152.05