Finding the Third Proportional to 56,911 and 124,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,911 : 124,662.50 = 124,662.50 : x
2. Step 2: Convert to fraction form
   56,911/124,662.50 = 124,662.50/x
3. Step 3: Cross multiply
   56,911x = 124,662.50 × 124,662.50
4. Step 4: Simplify right side
   56,911x = 15,540,738,906.25
5. Step 5: Solve for x
   x = 15,540,738,906.25/56,911
6. Step 6: Final answer
   x = 273,070.92