Finding the Third Proportional to 56,100.75 and 122,758.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,100.75 : 122,758.50 = 122,758.50 : x
2. Step 2: Convert to fraction form
   56,100.75/122,758.50 = 122,758.50/x
3. Step 3: Cross multiply
   56,100.75x = 122,758.50 × 122,758.50
4. Step 4: Simplify right side
   56,100.75x = 15,069,649,322.25
5. Step 5: Solve for x
   x = 15,069,649,322.25/56,100.75
6. Step 6: Final answer
   x = 268,617.61