Finding the Third Proportional to 221,598 and 534,261.38

Step by Step Solution

1. Step 1: Write the proportion equation
   221,598 : 534,261.38 = 534,261.38 : x
2. Step 2: Convert to fraction form
   221,598/534,261.38 = 534,261.38/x
3. Step 3: Cross multiply
   221,598x = 534,261.38 × 534,261.38
4. Step 4: Simplify right side
   221,598x = 285,435,216,816.89
5. Step 5: Solve for x
   x = 285,435,216,816.89/221,598
6. Step 6: Final answer
   x = 1,288,076.68