Finding the Third Proportional to 45,612 and 72,860

Step by Step Solution

1. Step 1: Write the proportion equation
   45,612 : 72,860 = 72,860 : x
2. Step 2: Convert to fraction form
   45,612/72,860 = 72,860/x
3. Step 3: Cross multiply
   45,612x = 72,860 × 72,860
4. Step 4: Simplify right side
   45,612x = 5,308,579,600
5. Step 5: Solve for x
   x = 5,308,579,600/45,612
6. Step 6: Final answer
   x = 116,385.59