Finding the Third Proportional to 69,840.50 and 108,119.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,840.50 : 108,119.50 = 108,119.50 : x
2. Step 2: Convert to fraction form
   69,840.50/108,119.50 = 108,119.50/x
3. Step 3: Cross multiply
   69,840.50x = 108,119.50 × 108,119.50
4. Step 4: Simplify right side
   69,840.50x = 11,689,826,280.25
5. Step 5: Solve for x
   x = 11,689,826,280.25/69,840.50
6. Step 6: Final answer
   x = 167,378.90