Finding the Third Proportional to 306,084.50 and 649,222

Step by Step Solution

1. Step 1: Write the proportion equation
   306,084.50 : 649,222 = 649,222 : x
2. Step 2: Convert to fraction form
   306,084.50/649,222 = 649,222/x
3. Step 3: Cross multiply
   306,084.50x = 649,222 × 649,222
4. Step 4: Simplify right side
   306,084.50x = 421,489,205,284
5. Step 5: Solve for x
   x = 421,489,205,284/306,084.50
6. Step 6: Final answer
   x = 1,377,035.44