Finding the Third Proportional to 133,172 and 285,300

Step by Step Solution

1. Step 1: Write the proportion equation
   133,172 : 285,300 = 285,300 : x
2. Step 2: Convert to fraction form
   133,172/285,300 = 285,300/x
3. Step 3: Cross multiply
   133,172x = 285,300 × 285,300
4. Step 4: Simplify right side
   133,172x = 81,396,090,000
5. Step 5: Solve for x
   x = 81,396,090,000/133,172
6. Step 6: Final answer
   x = 611,210.24