Finding the Third Proportional to 72,860 and 109,359

Step by Step Solution

1. Step 1: Write the proportion equation
   72,860 : 109,359 = 109,359 : x
2. Step 2: Convert to fraction form
   72,860/109,359 = 109,359/x
3. Step 3: Cross multiply
   72,860x = 109,359 × 109,359
4. Step 4: Simplify right side
   72,860x = 11,959,390,881
5. Step 5: Solve for x
   x = 11,959,390,881/72,860
6. Step 6: Final answer
   x = 164,142.07