Finding the Third Proportional to 140,852 and 218,429

Step by Step Solution

1. Step 1: Write the proportion equation
   140,852 : 218,429 = 218,429 : x
2. Step 2: Convert to fraction form
   140,852/218,429 = 218,429/x
3. Step 3: Cross multiply
   140,852x = 218,429 × 218,429
4. Step 4: Simplify right side
   140,852x = 47,711,228,041
5. Step 5: Solve for x
   x = 47,711,228,041/140,852
6. Step 6: Final answer
   x = 338,733.05