Finding the Third Proportional to 77,998.50 and 111,458.25

Step by Step Solution

1. Step 1: Write the proportion equation
   77,998.50 : 111,458.25 = 111,458.25 : x
2. Step 2: Convert to fraction form
   77,998.50/111,458.25 = 111,458.25/x
3. Step 3: Cross multiply
   77,998.50x = 111,458.25 × 111,458.25
4. Step 4: Simplify right side
   77,998.50x = 12,422,941,493.06
5. Step 5: Solve for x
   x = 12,422,941,493.06/77,998.50
6. Step 6: Final answer
   x = 159,271.54