Finding the Third Proportional to 146,931 and 218,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   146,931 : 218,236.50 = 218,236.50 : x
2. Step 2: Convert to fraction form
   146,931/218,236.50 = 218,236.50/x
3. Step 3: Cross multiply
   146,931x = 218,236.50 × 218,236.50
4. Step 4: Simplify right side
   146,931x = 47,627,169,932.25
5. Step 5: Solve for x
   x = 47,627,169,932.25/146,931
6. Step 6: Final answer
   x = 324,146.50