Finding the Third Proportional to 140,949 and 218,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,949 : 218,389.50 = 218,389.50 : x
2. Step 2: Convert to fraction form
   140,949/218,389.50 = 218,389.50/x
3. Step 3: Cross multiply
   140,949x = 218,389.50 × 218,389.50
4. Step 4: Simplify right side
   140,949x = 47,693,973,710.25
5. Step 5: Solve for x
   x = 47,693,973,710.25/140,949
6. Step 6: Final answer
   x = 338,377.52