Finding the Third Proportional to 73,200 and 99,424

Step by Step Solution

1. Step 1: Write the proportion equation
   73,200 : 99,424 = 99,424 : x
2. Step 2: Convert to fraction form
   73,200/99,424 = 99,424/x
3. Step 3: Cross multiply
   73,200x = 99,424 × 99,424
4. Step 4: Simplify right side
   73,200x = 9,885,131,776
5. Step 5: Solve for x
   x = 9,885,131,776/73,200
6. Step 6: Final answer
   x = 135,042.78