Finding the Third Proportional to 384,808.50 and 579,521

Step by Step Solution

1. Step 1: Write the proportion equation
   384,808.50 : 579,521 = 579,521 : x
2. Step 2: Convert to fraction form
   384,808.50/579,521 = 579,521/x
3. Step 3: Cross multiply
   384,808.50x = 579,521 × 579,521
4. Step 4: Simplify right side
   384,808.50x = 335,844,589,441
5. Step 5: Solve for x
   x = 335,844,589,441/384,808.50
6. Step 6: Final answer
   x = 872,757.72