Finding the Third Proportional to 78,913.50 and 106,321.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,913.50 : 106,321.25 = 106,321.25 : x
2. Step 2: Convert to fraction form
   78,913.50/106,321.25 = 106,321.25/x
3. Step 3: Cross multiply
   78,913.50x = 106,321.25 × 106,321.25
4. Step 4: Simplify right side
   78,913.50x = 11,304,208,201.56
5. Step 5: Solve for x
   x = 11,304,208,201.56/78,913.50
6. Step 6: Final answer
   x = 143,248.09