Finding the Third Proportional to 85,680.28 and 187,975.69

Step by Step Solution

1. Step 1: Write the proportion equation
   85,680.28 : 187,975.69 = 187,975.69 : x
2. Step 2: Convert to fraction form
   85,680.28/187,975.69 = 187,975.69/x
3. Step 3: Cross multiply
   85,680.28x = 187,975.69 × 187,975.69
4. Step 4: Simplify right side
   85,680.28x = 35,334,859,091.10
5. Step 5: Solve for x
   x = 35,334,859,091.10/85,680.28
6. Step 6: Final answer
   x = 412,403.63