Finding the Third Proportional to 485,398.50 and 759,783

Step by Step Solution

1. Step 1: Write the proportion equation
   485,398.50 : 759,783 = 759,783 : x
2. Step 2: Convert to fraction form
   485,398.50/759,783 = 759,783/x
3. Step 3: Cross multiply
   485,398.50x = 759,783 × 759,783
4. Step 4: Simplify right side
   485,398.50x = 577,270,207,089
5. Step 5: Solve for x
   x = 577,270,207,089/485,398.50
6. Step 6: Final answer
   x = 1,189,270.69