Finding the Third Proportional to 485,404 and 759,790

Step by Step Solution

1. Step 1: Write the proportion equation
   485,404 : 759,790 = 759,790 : x
2. Step 2: Convert to fraction form
   485,404/759,790 = 759,790/x
3. Step 3: Cross multiply
   485,404x = 759,790 × 759,790
4. Step 4: Simplify right side
   485,404x = 577,280,844,100
5. Step 5: Solve for x
   x = 577,280,844,100/485,404
6. Step 6: Final answer
   x = 1,189,279.12