Finding the Third Proportional to 140,066.72 and 210,240.56

Step by Step Solution

1. Step 1: Write the proportion equation
   140,066.72 : 210,240.56 = 210,240.56 : x
2. Step 2: Convert to fraction form
   140,066.72/210,240.56 = 210,240.56/x
3. Step 3: Cross multiply
   140,066.72x = 210,240.56 × 210,240.56
4. Step 4: Simplify right side
   140,066.72x = 44,201,094,120.32
5. Step 5: Solve for x
   x = 44,201,094,120.32/140,066.72
6. Step 6: Final answer
   x = 315,571.71