Finding the Third Proportional to 57,172.50 and 76,379.63

Step by Step Solution

1. Step 1: Write the proportion equation
   57,172.50 : 76,379.63 = 76,379.63 : x
2. Step 2: Convert to fraction form
   57,172.50/76,379.63 = 76,379.63/x
3. Step 3: Cross multiply
   57,172.50x = 76,379.63 × 76,379.63
4. Step 4: Simplify right side
   57,172.50x = 5,833,847,115.14
5. Step 5: Solve for x
   x = 5,833,847,115.14/57,172.50
6. Step 6: Final answer
   x = 102,039.39