Finding the Third Proportional to 355,887 and 550,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   355,887 : 550,459.50 = 550,459.50 : x
2. Step 2: Convert to fraction form
   355,887/550,459.50 = 550,459.50/x
3. Step 3: Cross multiply
   355,887x = 550,459.50 × 550,459.50
4. Step 4: Simplify right side
   355,887x = 303,005,661,140.25
5. Step 5: Solve for x
   x = 303,005,661,140.25/355,887
6. Step 6: Final answer
   x = 851,409.75