Finding the Third Proportional to 47,985.75 and 72,639.28

Step by Step Solution

1. Step 1: Write the proportion equation
   47,985.75 : 72,639.28 = 72,639.28 : x
2. Step 2: Convert to fraction form
   47,985.75/72,639.28 = 72,639.28/x
3. Step 3: Cross multiply
   47,985.75x = 72,639.28 × 72,639.28
4. Step 4: Simplify right side
   47,985.75x = 5,276,465,180.52
5. Step 5: Solve for x
   x = 5,276,465,180.52/47,985.75
6. Step 6: Final answer
   x = 109,959.00