Finding the Third Proportional to 129,001.50 and 273,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,001.50 : 273,667.50 = 273,667.50 : x
2. Step 2: Convert to fraction form
   129,001.50/273,667.50 = 273,667.50/x
3. Step 3: Cross multiply
   129,001.50x = 273,667.50 × 273,667.50
4. Step 4: Simplify right side
   129,001.50x = 74,893,900,556.25
5. Step 5: Solve for x
   x = 74,893,900,556.25/129,001.50
6. Step 6: Final answer
   x = 580,566.12