Finding the Third Proportional to 136,039.50 and 301,684.50

Step by Step Solution

1. Step 1: Write the proportion equation
   136,039.50 : 301,684.50 = 301,684.50 : x
2. Step 2: Convert to fraction form
   136,039.50/301,684.50 = 301,684.50/x
3. Step 3: Cross multiply
   136,039.50x = 301,684.50 × 301,684.50
4. Step 4: Simplify right side
   136,039.50x = 91,013,537,540.25
5. Step 5: Solve for x
   x = 91,013,537,540.25/136,039.50
6. Step 6: Final answer
   x = 669,022.88