Finding the Third Proportional to 57,856.50 and 120,321

Step by Step Solution

1. Step 1: Write the proportion equation
   57,856.50 : 120,321 = 120,321 : x
2. Step 2: Convert to fraction form
   57,856.50/120,321 = 120,321/x
3. Step 3: Cross multiply
   57,856.50x = 120,321 × 120,321
4. Step 4: Simplify right side
   57,856.50x = 14,477,143,041
5. Step 5: Solve for x
   x = 14,477,143,041/57,856.50
6. Step 6: Final answer
   x = 250,225.01