Finding the Third Proportional to 65,139.19 and 132,085.69

Step by Step Solution

1. Step 1: Write the proportion equation
   65,139.19 : 132,085.69 = 132,085.69 : x
2. Step 2: Convert to fraction form
   65,139.19/132,085.69 = 132,085.69/x
3. Step 3: Cross multiply
   65,139.19x = 132,085.69 × 132,085.69
4. Step 4: Simplify right side
   65,139.19x = 17,446,628,842.35
5. Step 5: Solve for x
   x = 17,446,628,842.35/65,139.19
6. Step 6: Final answer
   x = 267,836.14