Finding the Third Proportional to 68,431.50 and 113,575.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,431.50 : 113,575.50 = 113,575.50 : x
2. Step 2: Convert to fraction form
   68,431.50/113,575.50 = 113,575.50/x
3. Step 3: Cross multiply
   68,431.50x = 113,575.50 × 113,575.50
4. Step 4: Simplify right side
   68,431.50x = 12,899,394,200.25
5. Step 5: Solve for x
   x = 12,899,394,200.25/68,431.50
6. Step 6: Final answer
   x = 188,500.82