Finding the Third Proportional to 210,720 and 465,756

Step by Step Solution

1. Step 1: Write the proportion equation
   210,720 : 465,756 = 465,756 : x
2. Step 2: Convert to fraction form
   210,720/465,756 = 465,756/x
3. Step 3: Cross multiply
   210,720x = 465,756 × 465,756
4. Step 4: Simplify right side
   210,720x = 216,928,651,536
5. Step 5: Solve for x
   x = 216,928,651,536/210,720
6. Step 6: Final answer
   x = 1,029,463.99