Finding the Third Proportional to 550,404 and 775,091.25

Step by Step Solution

1. Step 1: Write the proportion equation
   550,404 : 775,091.25 = 775,091.25 : x
2. Step 2: Convert to fraction form
   550,404/775,091.25 = 775,091.25/x
3. Step 3: Cross multiply
   550,404x = 775,091.25 × 775,091.25
4. Step 4: Simplify right side
   550,404x = 600,766,445,826.56
5. Step 5: Solve for x
   x = 600,766,445,826.56/550,404
6. Step 6: Final answer
   x = 1,091,500.87