Finding the Third Proportional to 133,200 and 285,293.25

Step by Step Solution

1. Step 1: Write the proportion equation
   133,200 : 285,293.25 = 285,293.25 : x
2. Step 2: Convert to fraction form
   133,200/285,293.25 = 285,293.25/x
3. Step 3: Cross multiply
   133,200x = 285,293.25 × 285,293.25
4. Step 4: Simplify right side
   133,200x = 81,392,238,495.56
5. Step 5: Solve for x
   x = 81,392,238,495.56/133,200
6. Step 6: Final answer
   x = 611,052.84