Finding the Third Proportional to 133,122 and 286,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,122 : 286,540.50 = 286,540.50 : x
2. Step 2: Convert to fraction form
   133,122/286,540.50 = 286,540.50/x
3. Step 3: Cross multiply
   133,122x = 286,540.50 × 286,540.50
4. Step 4: Simplify right side
   133,122x = 82,105,458,140.25
5. Step 5: Solve for x
   x = 82,105,458,140.25/133,122
6. Step 6: Final answer
   x = 616,768.51