Finding the Third Proportional to 105,438 and 124,027.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,438 : 124,027.50 = 124,027.50 : x
2. Step 2: Convert to fraction form
   105,438/124,027.50 = 124,027.50/x
3. Step 3: Cross multiply
   105,438x = 124,027.50 × 124,027.50
4. Step 4: Simplify right side
   105,438x = 15,382,820,756.25
5. Step 5: Solve for x
   x = 15,382,820,756.25/105,438
6. Step 6: Final answer
   x = 145,894.47