Finding the Third Proportional to 56,860 and 89,192

Step by Step Solution

1. Step 1: Write the proportion equation
   56,860 : 89,192 = 89,192 : x
2. Step 2: Convert to fraction form
   56,860/89,192 = 89,192/x
3. Step 3: Cross multiply
   56,860x = 89,192 × 89,192
4. Step 4: Simplify right side
   56,860x = 7,955,212,864
5. Step 5: Solve for x
   x = 7,955,212,864/56,860
6. Step 6: Final answer
   x = 139,908.77