Finding the Third Proportional to 133,210.50 and 285,315

Step by Step Solution

1. Step 1: Write the proportion equation
   133,210.50 : 285,315 = 285,315 : x
2. Step 2: Convert to fraction form
   133,210.50/285,315 = 285,315/x
3. Step 3: Cross multiply
   133,210.50x = 285,315 × 285,315
4. Step 4: Simplify right side
   133,210.50x = 81,404,649,225
5. Step 5: Solve for x
   x = 81,404,649,225/133,210.50
6. Step 6: Final answer
   x = 611,097.84