Finding the Third Proportional to 329,762 and 612,388

Step by Step Solution

1. Step 1: Write the proportion equation
   329,762 : 612,388 = 612,388 : x
2. Step 2: Convert to fraction form
   329,762/612,388 = 612,388/x
3. Step 3: Cross multiply
   329,762x = 612,388 × 612,388
4. Step 4: Simplify right side
   329,762x = 375,019,062,544
5. Step 5: Solve for x
   x = 375,019,062,544/329,762
6. Step 6: Final answer
   x = 1,137,241.59