Finding the Third Proportional to 212,721.75 and 453,600

Step by Step Solution

1. Step 1: Write the proportion equation
   212,721.75 : 453,600 = 453,600 : x
2. Step 2: Convert to fraction form
   212,721.75/453,600 = 453,600/x
3. Step 3: Cross multiply
   212,721.75x = 453,600 × 453,600
4. Step 4: Simplify right side
   212,721.75x = 205,752,960,000
5. Step 5: Solve for x
   x = 205,752,960,000/212,721.75
6. Step 6: Final answer
   x = 967,239.88