Finding the Third Proportional to 485,640.56 and 760,159.69

Step by Step Solution

1. Step 1: Write the proportion equation
   485,640.56 : 760,159.69 = 760,159.69 : x
2. Step 2: Convert to fraction form
   485,640.56/760,159.69 = 760,159.69/x
3. Step 3: Cross multiply
   485,640.56x = 760,159.69 × 760,159.69
4. Step 4: Simplify right side
   485,640.56x = 577,842,750,500.10
5. Step 5: Solve for x
   x = 577,842,750,500.10/485,640.56
6. Step 6: Final answer
   x = 1,189,856.85