Finding the Third Proportional to 89,688 and 132,840

Step by Step Solution

1. Step 1: Write the proportion equation
   89,688 : 132,840 = 132,840 : x
2. Step 2: Convert to fraction form
   89,688/132,840 = 132,840/x
3. Step 3: Cross multiply
   89,688x = 132,840 × 132,840
4. Step 4: Simplify right side
   89,688x = 17,646,465,600
5. Step 5: Solve for x
   x = 17,646,465,600/89,688
6. Step 6: Final answer
   x = 196,753.92