Finding the Third Proportional to 59,145.75 and 85,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,145.75 : 85,018.50 = 85,018.50 : x
2. Step 2: Convert to fraction form
   59,145.75/85,018.50 = 85,018.50/x
3. Step 3: Cross multiply
   59,145.75x = 85,018.50 × 85,018.50
4. Step 4: Simplify right side
   59,145.75x = 7,228,145,342.25
5. Step 5: Solve for x
   x = 7,228,145,342.25/59,145.75
6. Step 6: Final answer
   x = 122,209.04