Finding the Third Proportional to 65,641.50 and 133,689.38

Step by Step Solution

1. Step 1: Write the proportion equation
   65,641.50 : 133,689.38 = 133,689.38 : x
2. Step 2: Convert to fraction form
   65,641.50/133,689.38 = 133,689.38/x
3. Step 3: Cross multiply
   65,641.50x = 133,689.38 × 133,689.38
4. Step 4: Simplify right side
   65,641.50x = 17,872,848,987.89
5. Step 5: Solve for x
   x = 17,872,848,987.89/65,641.50
6. Step 6: Final answer
   x = 272,279.72