Finding the Third Proportional to 355,842 and 550,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   355,842 : 550,384.50 = 550,384.50 : x
2. Step 2: Convert to fraction form
   355,842/550,384.50 = 550,384.50/x
3. Step 3: Cross multiply
   355,842x = 550,384.50 × 550,384.50
4. Step 4: Simplify right side
   355,842x = 302,923,097,840.25
5. Step 5: Solve for x
   x = 302,923,097,840.25/355,842
6. Step 6: Final answer
   x = 851,285.40