Finding the Third Proportional to 133,388.50 and 203,470

Step by Step Solution

1. Step 1: Write the proportion equation
   133,388.50 : 203,470 = 203,470 : x
2. Step 2: Convert to fraction form
   133,388.50/203,470 = 203,470/x
3. Step 3: Cross multiply
   133,388.50x = 203,470 × 203,470
4. Step 4: Simplify right side
   133,388.50x = 41,400,040,900
5. Step 5: Solve for x
   x = 41,400,040,900/133,388.50
6. Step 6: Final answer
   x = 310,371.89