Finding the Third Proportional to 306,728.50 and 468,396

Step by Step Solution

1. Step 1: Write the proportion equation
   306,728.50 : 468,396 = 468,396 : x
2. Step 2: Convert to fraction form
   306,728.50/468,396 = 468,396/x
3. Step 3: Cross multiply
   306,728.50x = 468,396 × 468,396
4. Step 4: Simplify right side
   306,728.50x = 219,394,812,816
5. Step 5: Solve for x
   x = 219,394,812,816/306,728.50
6. Step 6: Final answer
   x = 715,273.65