Finding the Third Proportional to 151,496 and 318,970

Step by Step Solution

1. Step 1: Write the proportion equation
   151,496 : 318,970 = 318,970 : x
2. Step 2: Convert to fraction form
   151,496/318,970 = 318,970/x
3. Step 3: Cross multiply
   151,496x = 318,970 × 318,970
4. Step 4: Simplify right side
   151,496x = 101,741,860,900
5. Step 5: Solve for x
   x = 101,741,860,900/151,496
6. Step 6: Final answer
   x = 671,581.17