Finding the Third Proportional to 72,912 and 112,406

Step by Step Solution

1. Step 1: Write the proportion equation
   72,912 : 112,406 = 112,406 : x
2. Step 2: Convert to fraction form
   72,912/112,406 = 112,406/x
3. Step 3: Cross multiply
   72,912x = 112,406 × 112,406
4. Step 4: Simplify right side
   72,912x = 12,635,108,836
5. Step 5: Solve for x
   x = 12,635,108,836/72,912
6. Step 6: Final answer
   x = 173,292.58