Finding the Third Proportional to 236,401.50 and 318,483

Step by Step Solution

1. Step 1: Write the proportion equation
   236,401.50 : 318,483 = 318,483 : x
2. Step 2: Convert to fraction form
   236,401.50/318,483 = 318,483/x
3. Step 3: Cross multiply
   236,401.50x = 318,483 × 318,483
4. Step 4: Simplify right side
   236,401.50x = 101,431,421,289
5. Step 5: Solve for x
   x = 101,431,421,289/236,401.50
6. Step 6: Final answer
   x = 429,064.20