Finding the Third Proportional to 57,860.58 and 90,173.88

Step by Step Solution

1. Step 1: Write the proportion equation
   57,860.58 : 90,173.88 = 90,173.88 : x
2. Step 2: Convert to fraction form
   57,860.58/90,173.88 = 90,173.88/x
3. Step 3: Cross multiply
   57,860.58x = 90,173.88 × 90,173.88
4. Step 4: Simplify right side
   57,860.58x = 8,131,329,141.48
5. Step 5: Solve for x
   x = 8,131,329,141.48/57,860.58
6. Step 6: Final answer
   x = 140,533.15