Finding the Third Proportional to 78,913.50 and 110,998.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,913.50 : 110,998.50 = 110,998.50 : x
2. Step 2: Convert to fraction form
   78,913.50/110,998.50 = 110,998.50/x
3. Step 3: Cross multiply
   78,913.50x = 110,998.50 × 110,998.50
4. Step 4: Simplify right side
   78,913.50x = 12,320,667,002.25
5. Step 5: Solve for x
   x = 12,320,667,002.25/78,913.50
6. Step 6: Final answer
   x = 156,128.76