Finding the Third Proportional to 351,144 and 501,808.50

Step by Step Solution

1. Step 1: Write the proportion equation
   351,144 : 501,808.50 = 501,808.50 : x
2. Step 2: Convert to fraction form
   351,144/501,808.50 = 501,808.50/x
3. Step 3: Cross multiply
   351,144x = 501,808.50 × 501,808.50
4. Step 4: Simplify right side
   351,144x = 251,811,770,672.25
5. Step 5: Solve for x
   x = 251,811,770,672.25/351,144
6. Step 6: Final answer
   x = 717,118.25