Finding the Third Proportional to 151,507.50 and 318,717

Step by Step Solution

1. Step 1: Write the proportion equation
   151,507.50 : 318,717 = 318,717 : x
2. Step 2: Convert to fraction form
   151,507.50/318,717 = 318,717/x
3. Step 3: Cross multiply
   151,507.50x = 318,717 × 318,717
4. Step 4: Simplify right side
   151,507.50x = 101,580,526,089
5. Step 5: Solve for x
   x = 101,580,526,089/151,507.50
6. Step 6: Final answer
   x = 670,465.33