Finding the Third Proportional to 134,609.50 and 208,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   134,609.50 : 208,404.50 = 208,404.50 : x
2. Step 2: Convert to fraction form
   134,609.50/208,404.50 = 208,404.50/x
3. Step 3: Cross multiply
   134,609.50x = 208,404.50 × 208,404.50
4. Step 4: Simplify right side
   134,609.50x = 43,432,435,620.25
5. Step 5: Solve for x
   x = 43,432,435,620.25/134,609.50
6. Step 6: Final answer
   x = 322,655.05