Finding the Third Proportional to 140,085 and 217,271.25

Step by Step Solution

1. Step 1: Write the proportion equation
   140,085 : 217,271.25 = 217,271.25 : x
2. Step 2: Convert to fraction form
   140,085/217,271.25 = 217,271.25/x
3. Step 3: Cross multiply
   140,085x = 217,271.25 × 217,271.25
4. Step 4: Simplify right side
   140,085x = 47,206,796,076.56
5. Step 5: Solve for x
   x = 47,206,796,076.56/140,085
6. Step 6: Final answer
   x = 336,986.80