Finding the Third Proportional to 583,081.50 and 899,530.50

Step by Step Solution

1. Step 1: Write the proportion equation
   583,081.50 : 899,530.50 = 899,530.50 : x
2. Step 2: Convert to fraction form
   583,081.50/899,530.50 = 899,530.50/x
3. Step 3: Cross multiply
   583,081.50x = 899,530.50 × 899,530.50
4. Step 4: Simplify right side
   583,081.50x = 809,155,120,430.25
5. Step 5: Solve for x
   x = 809,155,120,430.25/583,081.50
6. Step 6: Final answer
   x = 1,387,722.16