Finding the Third Proportional to 57,775.50 and 121,140

Step by Step Solution

1. Step 1: Write the proportion equation
   57,775.50 : 121,140 = 121,140 : x
2. Step 2: Convert to fraction form
   57,775.50/121,140 = 121,140/x
3. Step 3: Cross multiply
   57,775.50x = 121,140 × 121,140
4. Step 4: Simplify right side
   57,775.50x = 14,674,899,600
5. Step 5: Solve for x
   x = 14,674,899,600/57,775.50
6. Step 6: Final answer
   x = 253,998.66