Finding the Third Proportional to 151,401 and 318,484.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,401 : 318,484.50 = 318,484.50 : x
2. Step 2: Convert to fraction form
   151,401/318,484.50 = 318,484.50/x
3. Step 3: Cross multiply
   151,401x = 318,484.50 × 318,484.50
4. Step 4: Simplify right side
   151,401x = 101,432,376,740.25
5. Step 5: Solve for x
   x = 101,432,376,740.25/151,401
6. Step 6: Final answer
   x = 669,958.43