Finding the Third Proportional to 306,969.75 and 629,154

Step by Step Solution

1. Step 1: Write the proportion equation
   306,969.75 : 629,154 = 629,154 : x
2. Step 2: Convert to fraction form
   306,969.75/629,154 = 629,154/x
3. Step 3: Cross multiply
   306,969.75x = 629,154 × 629,154
4. Step 4: Simplify right side
   306,969.75x = 395,834,755,716
5. Step 5: Solve for x
   x = 395,834,755,716/306,969.75
6. Step 6: Final answer
   x = 1,289,491.08