Finding the Third Proportional to 81,907.88 and 123,613.59

Step by Step Solution

1. Step 1: Write the proportion equation
   81,907.88 : 123,613.59 = 123,613.59 : x
2. Step 2: Convert to fraction form
   81,907.88/123,613.59 = 123,613.59/x
3. Step 3: Cross multiply
   81,907.88x = 123,613.59 × 123,613.59
4. Step 4: Simplify right side
   81,907.88x = 15,280,320,559.79
5. Step 5: Solve for x
   x = 15,280,320,559.79/81,907.88
6. Step 6: Final answer
   x = 186,554.96