Finding the Third Proportional to 42,672 and 99,678

Step by Step Solution

1. Step 1: Write the proportion equation
   42,672 : 99,678 = 99,678 : x
2. Step 2: Convert to fraction form
   42,672/99,678 = 99,678/x
3. Step 3: Cross multiply
   42,672x = 99,678 × 99,678
4. Step 4: Simplify right side
   42,672x = 9,935,703,684
5. Step 5: Solve for x
   x = 9,935,703,684/42,672
6. Step 6: Final answer
   x = 232,838.95