Finding the Third Proportional to 57,408.75 and 88,654.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,408.75 : 88,654.50 = 88,654.50 : x
2. Step 2: Convert to fraction form
   57,408.75/88,654.50 = 88,654.50/x
3. Step 3: Cross multiply
   57,408.75x = 88,654.50 × 88,654.50
4. Step 4: Simplify right side
   57,408.75x = 7,859,620,370.25
5. Step 5: Solve for x
   x = 7,859,620,370.25/57,408.75
6. Step 6: Final answer
   x = 136,906.31