Finding the Third Proportional to 72,396 and 108,156

Step by Step Solution

1. Step 1: Write the proportion equation
   72,396 : 108,156 = 108,156 : x
2. Step 2: Convert to fraction form
   72,396/108,156 = 108,156/x
3. Step 3: Cross multiply
   72,396x = 108,156 × 108,156
4. Step 4: Simplify right side
   72,396x = 11,697,720,336
5. Step 5: Solve for x
   x = 11,697,720,336/72,396
6. Step 6: Final answer
   x = 161,579.65