Finding the Third Proportional to 196,800.75 and 407,605.50

Step by Step Solution

1. Step 1: Write the proportion equation
   196,800.75 : 407,605.50 = 407,605.50 : x
2. Step 2: Convert to fraction form
   196,800.75/407,605.50 = 407,605.50/x
3. Step 3: Cross multiply
   196,800.75x = 407,605.50 × 407,605.50
4. Step 4: Simplify right side
   196,800.75x = 166,142,243,630.25
5. Step 5: Solve for x
   x = 166,142,243,630.25/196,800.75
6. Step 6: Final answer
   x = 844,215.50