Finding the Third Proportional to 92,115 and 142,243

Step by Step Solution

1. Step 1: Write the proportion equation
   92,115 : 142,243 = 142,243 : x
2. Step 2: Convert to fraction form
   92,115/142,243 = 142,243/x
3. Step 3: Cross multiply
   92,115x = 142,243 × 142,243
4. Step 4: Simplify right side
   92,115x = 20,233,071,049
5. Step 5: Solve for x
   x = 20,233,071,049/92,115
6. Step 6: Final answer
   x = 219,650.12