Finding the Third Proportional to 212,851.50 and 329,604

Step by Step Solution

1. Step 1: Write the proportion equation
   212,851.50 : 329,604 = 329,604 : x
2. Step 2: Convert to fraction form
   212,851.50/329,604 = 329,604/x
3. Step 3: Cross multiply
   212,851.50x = 329,604 × 329,604
4. Step 4: Simplify right side
   212,851.50x = 108,638,796,816
5. Step 5: Solve for x
   x = 108,638,796,816/212,851.50
6. Step 6: Final answer
   x = 510,397.14