Finding the Third Proportional to 154,064 and 331,123

Step by Step Solution

1. Step 1: Write the proportion equation
   154,064 : 331,123 = 331,123 : x
2. Step 2: Convert to fraction form
   154,064/331,123 = 331,123/x
3. Step 3: Cross multiply
   154,064x = 331,123 × 331,123
4. Step 4: Simplify right side
   154,064x = 109,642,441,129
5. Step 5: Solve for x
   x = 109,642,441,129/154,064
6. Step 6: Final answer
   x = 711,668.15