Finding the Third Proportional to 73,218 and 99,443

Step by Step Solution

1. Step 1: Write the proportion equation
   73,218 : 99,443 = 99,443 : x
2. Step 2: Convert to fraction form
   73,218/99,443 = 99,443/x
3. Step 3: Cross multiply
   73,218x = 99,443 × 99,443
4. Step 4: Simplify right side
   73,218x = 9,888,910,249
5. Step 5: Solve for x
   x = 9,888,910,249/73,218
6. Step 6: Final answer
   x = 135,061.19