Finding the Third Proportional to 86,441 and 127,672

Step by Step Solution

1. Step 1: Write the proportion equation
   86,441 : 127,672 = 127,672 : x
2. Step 2: Convert to fraction form
   86,441/127,672 = 127,672/x
3. Step 3: Cross multiply
   86,441x = 127,672 × 127,672
4. Step 4: Simplify right side
   86,441x = 16,300,139,584
5. Step 5: Solve for x
   x = 16,300,139,584/86,441
6. Step 6: Final answer
   x = 188,569.54