Finding the Third Proportional to 86,829.50 and 176,072.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,829.50 : 176,072.50 = 176,072.50 : x
2. Step 2: Convert to fraction form
   86,829.50/176,072.50 = 176,072.50/x
3. Step 3: Cross multiply
   86,829.50x = 176,072.50 × 176,072.50
4. Step 4: Simplify right side
   86,829.50x = 31,001,525,256.25
5. Step 5: Solve for x
   x = 31,001,525,256.25/86,829.50
6. Step 6: Final answer
   x = 357,039.09