Finding the Third Proportional to 151,303.50 and 322,479

Step by Step Solution

1. Step 1: Write the proportion equation
   151,303.50 : 322,479 = 322,479 : x
2. Step 2: Convert to fraction form
   151,303.50/322,479 = 322,479/x
3. Step 3: Cross multiply
   151,303.50x = 322,479 × 322,479
4. Step 4: Simplify right side
   151,303.50x = 103,992,705,441
5. Step 5: Solve for x
   x = 103,992,705,441/151,303.50
6. Step 6: Final answer
   x = 687,311.96