Finding the Third Proportional to 72,418.50 and 107,563.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,418.50 : 107,563.50 = 107,563.50 : x
2. Step 2: Convert to fraction form
   72,418.50/107,563.50 = 107,563.50/x
3. Step 3: Cross multiply
   72,418.50x = 107,563.50 × 107,563.50
4. Step 4: Simplify right side
   72,418.50x = 11,569,906,532.25
5. Step 5: Solve for x
   x = 11,569,906,532.25/72,418.50
6. Step 6: Final answer
   x = 159,764.52