Finding the Third Proportional to 365,804 and 521,488

Step by Step Solution

1. Step 1: Write the proportion equation
   365,804 : 521,488 = 521,488 : x
2. Step 2: Convert to fraction form
   365,804/521,488 = 521,488/x
3. Step 3: Cross multiply
   365,804x = 521,488 × 521,488
4. Step 4: Simplify right side
   365,804x = 271,949,734,144
5. Step 5: Solve for x
   x = 271,949,734,144/365,804
6. Step 6: Final answer
   x = 743,430.18