Finding the Third Proportional to 311,202 and 633,814.88

Step by Step Solution

1. Step 1: Write the proportion equation
   311,202 : 633,814.88 = 633,814.88 : x
2. Step 2: Convert to fraction form
   311,202/633,814.88 = 633,814.88/x
3. Step 3: Cross multiply
   311,202x = 633,814.88 × 633,814.88
4. Step 4: Simplify right side
   311,202x = 401,721,295,771.27
5. Step 5: Solve for x
   x = 401,721,295,771.27/311,202
6. Step 6: Final answer
   x = 1,290,869.90