Finding the Third Proportional to 550,410 and 775,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   550,410 : 775,105.50 = 775,105.50 : x
2. Step 2: Convert to fraction form
   550,410/775,105.50 = 775,105.50/x
3. Step 3: Cross multiply
   550,410x = 775,105.50 × 775,105.50
4. Step 4: Simplify right side
   550,410x = 600,788,536,130.25
5. Step 5: Solve for x
   x = 600,788,536,130.25/550,410
6. Step 6: Final answer
   x = 1,091,529.11