Finding the Third Proportional to 54,684.75 and 85,672.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,684.75 : 85,672.50 = 85,672.50 : x
2. Step 2: Convert to fraction form
   54,684.75/85,672.50 = 85,672.50/x
3. Step 3: Cross multiply
   54,684.75x = 85,672.50 × 85,672.50
4. Step 4: Simplify right side
   54,684.75x = 7,339,777,256.25
5. Step 5: Solve for x
   x = 7,339,777,256.25/54,684.75
6. Step 6: Final answer
   x = 134,219.82