Finding the Third Proportional to 59,509.50 and 81,601.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,509.50 : 81,601.50 = 81,601.50 : x
2. Step 2: Convert to fraction form
   59,509.50/81,601.50 = 81,601.50/x
3. Step 3: Cross multiply
   59,509.50x = 81,601.50 × 81,601.50
4. Step 4: Simplify right side
   59,509.50x = 6,658,804,802.25
5. Step 5: Solve for x
   x = 6,658,804,802.25/59,509.50
6. Step 6: Final answer
   x = 111,894.82