Finding the Third Proportional to 56,904.75 and 85,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,904.75 : 85,540.50 = 85,540.50 : x
2. Step 2: Convert to fraction form
   56,904.75/85,540.50 = 85,540.50/x
3. Step 3: Cross multiply
   56,904.75x = 85,540.50 × 85,540.50
4. Step 4: Simplify right side
   56,904.75x = 7,317,177,140.25
5. Step 5: Solve for x
   x = 7,317,177,140.25/56,904.75
6. Step 6: Final answer
   x = 128,586.40