Finding the Third Proportional to 354,906 and 550,588.50

Step by Step Solution

1. Step 1: Write the proportion equation
   354,906 : 550,588.50 = 550,588.50 : x
2. Step 2: Convert to fraction form
   354,906/550,588.50 = 550,588.50/x
3. Step 3: Cross multiply
   354,906x = 550,588.50 × 550,588.50
4. Step 4: Simplify right side
   354,906x = 303,147,696,332.25
5. Step 5: Solve for x
   x = 303,147,696,332.25/354,906
6. Step 6: Final answer
   x = 854,163.35