Finding the Third Proportional to 550,509 and 804,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   550,509 : 804,520.50 = 804,520.50 : x
2. Step 2: Convert to fraction form
   550,509/804,520.50 = 804,520.50/x
3. Step 3: Cross multiply
   550,509x = 804,520.50 × 804,520.50
4. Step 4: Simplify right side
   550,509x = 647,253,234,920.25
5. Step 5: Solve for x
   x = 647,253,234,920.25/550,509
6. Step 6: Final answer
   x = 1,175,735.97