Finding the Third Proportional to 65,647.88 and 72,414.75

Step by Step Solution

1. Step 1: Write the proportion equation
   65,647.88 : 72,414.75 = 72,414.75 : x
2. Step 2: Convert to fraction form
   65,647.88/72,414.75 = 72,414.75/x
3. Step 3: Cross multiply
   65,647.88x = 72,414.75 × 72,414.75
4. Step 4: Simplify right side
   65,647.88x = 5,243,896,017.56
5. Step 5: Solve for x
   x = 5,243,896,017.56/65,647.88
6. Step 6: Final answer
   x = 79,879.14