Finding the Third Proportional to 78,835.50 and 106,218

Step by Step Solution

1. Step 1: Write the proportion equation
   78,835.50 : 106,218 = 106,218 : x
2. Step 2: Convert to fraction form
   78,835.50/106,218 = 106,218/x
3. Step 3: Cross multiply
   78,835.50x = 106,218 × 106,218
4. Step 4: Simplify right side
   78,835.50x = 11,282,263,524
5. Step 5: Solve for x
   x = 11,282,263,524/78,835.50
6. Step 6: Final answer
   x = 143,111.46