Finding the Third Proportional to 56,842 and 89,168

Step by Step Solution

1. Step 1: Write the proportion equation
   56,842 : 89,168 = 89,168 : x
2. Step 2: Convert to fraction form
   56,842/89,168 = 89,168/x
3. Step 3: Cross multiply
   56,842x = 89,168 × 89,168
4. Step 4: Simplify right side
   56,842x = 7,950,932,224
5. Step 5: Solve for x
   x = 7,950,932,224/56,842
6. Step 6: Final answer
   x = 139,877.77