Finding the Third Proportional to 151,378.88 and 318,441.38

Step by Step Solution

1. Step 1: Write the proportion equation
   151,378.88 : 318,441.38 = 318,441.38 : x
2. Step 2: Convert to fraction form
   151,378.88/318,441.38 = 318,441.38/x
3. Step 3: Cross multiply
   151,378.88x = 318,441.38 × 318,441.38
4. Step 4: Simplify right side
   151,378.88x = 101,404,909,311.89
5. Step 5: Solve for x
   x = 101,404,909,311.89/151,378.88
6. Step 6: Final answer
   x = 669,874.90