Finding the Third Proportional to 112,399.50 and 123,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,399.50 : 123,607.50 = 123,607.50 : x
2. Step 2: Convert to fraction form
   112,399.50/123,607.50 = 123,607.50/x
3. Step 3: Cross multiply
   112,399.50x = 123,607.50 × 123,607.50
4. Step 4: Simplify right side
   112,399.50x = 15,278,814,056.25
5. Step 5: Solve for x
   x = 15,278,814,056.25/112,399.50
6. Step 6: Final answer
   x = 135,933.11