Finding the Third Proportional to 148,274 and 308,836

Step by Step Solution

1. Step 1: Write the proportion equation
   148,274 : 308,836 = 308,836 : x
2. Step 2: Convert to fraction form
   148,274/308,836 = 308,836/x
3. Step 3: Cross multiply
   148,274x = 308,836 × 308,836
4. Step 4: Simplify right side
   148,274x = 95,379,674,896
5. Step 5: Solve for x
   x = 95,379,674,896/148,274
6. Step 6: Final answer
   x = 643,266.35