Finding the Third Proportional to 311,071.50 and 666,204

Step by Step Solution

1. Step 1: Write the proportion equation
   311,071.50 : 666,204 = 666,204 : x
2. Step 2: Convert to fraction form
   311,071.50/666,204 = 666,204/x
3. Step 3: Cross multiply
   311,071.50x = 666,204 × 666,204
4. Step 4: Simplify right side
   311,071.50x = 443,827,769,616
5. Step 5: Solve for x
   x = 443,827,769,616/311,071.50
6. Step 6: Final answer
   x = 1,426,770.92