Finding the Third Proportional to 587,155 and 899,686.50

Step by Step Solution

1. Step 1: Write the proportion equation
   587,155 : 899,686.50 = 899,686.50 : x
2. Step 2: Convert to fraction form
   587,155/899,686.50 = 899,686.50/x
3. Step 3: Cross multiply
   587,155x = 899,686.50 × 899,686.50
4. Step 4: Simplify right side
   587,155x = 809,435,798,282.25
5. Step 5: Solve for x
   x = 809,435,798,282.25/587,155
6. Step 6: Final answer
   x = 1,378,572.61