Finding the Third Proportional to 550,436.50 and 775,131

Step by Step Solution

1. Step 1: Write the proportion equation
   550,436.50 : 775,131 = 775,131 : x
2. Step 2: Convert to fraction form
   550,436.50/775,131 = 775,131/x
3. Step 3: Cross multiply
   550,436.50x = 775,131 × 775,131
4. Step 4: Simplify right side
   550,436.50x = 600,828,067,161
5. Step 5: Solve for x
   x = 600,828,067,161/550,436.50
6. Step 6: Final answer
   x = 1,091,548.38