Finding the Third Proportional to 350,682 and 501,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   350,682 : 501,439.50 = 501,439.50 : x
2. Step 2: Convert to fraction form
   350,682/501,439.50 = 501,439.50/x
3. Step 3: Cross multiply
   350,682x = 501,439.50 × 501,439.50
4. Step 4: Simplify right side
   350,682x = 251,441,572,160.25
5. Step 5: Solve for x
   x = 251,441,572,160.25/350,682
6. Step 6: Final answer
   x = 717,007.35