Finding the Third Proportional to 83,990 and 181,534

Step by Step Solution

1. Step 1: Write the proportion equation
   83,990 : 181,534 = 181,534 : x
2. Step 2: Convert to fraction form
   83,990/181,534 = 181,534/x
3. Step 3: Cross multiply
   83,990x = 181,534 × 181,534
4. Step 4: Simplify right side
   83,990x = 32,954,593,156
5. Step 5: Solve for x
   x = 32,954,593,156/83,990
6. Step 6: Final answer
   x = 392,363.30