Finding the Third Proportional to 355,551 and 550,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   355,551 : 550,390.50 = 550,390.50 : x
2. Step 2: Convert to fraction form
   355,551/550,390.50 = 550,390.50/x
3. Step 3: Cross multiply
   355,551x = 550,390.50 × 550,390.50
4. Step 4: Simplify right side
   355,551x = 302,929,702,490.25
5. Step 5: Solve for x
   x = 302,929,702,490.25/355,551
6. Step 6: Final answer
   x = 852,000.70