Finding the Third Proportional to 56,977.50 and 122,715.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,977.50 : 122,715.50 = 122,715.50 : x
2. Step 2: Convert to fraction form
   56,977.50/122,715.50 = 122,715.50/x
3. Step 3: Cross multiply
   56,977.50x = 122,715.50 × 122,715.50
4. Step 4: Simplify right side
   56,977.50x = 15,059,093,940.25
5. Step 5: Solve for x
   x = 15,059,093,940.25/56,977.50
6. Step 6: Final answer
   x = 264,298.96