Finding the Third Proportional to 302,756.50 and 713,680

Step by Step Solution

1. Step 1: Write the proportion equation
   302,756.50 : 713,680 = 713,680 : x
2. Step 2: Convert to fraction form
   302,756.50/713,680 = 713,680/x
3. Step 3: Cross multiply
   302,756.50x = 713,680 × 713,680
4. Step 4: Simplify right side
   302,756.50x = 509,339,142,400
5. Step 5: Solve for x
   x = 509,339,142,400/302,756.50
6. Step 6: Final answer
   x = 1,682,339.25