Finding the Third Proportional to 443,165.06 and 687,510.56

Step by Step Solution

1. Step 1: Write the proportion equation
   443,165.06 : 687,510.56 = 687,510.56 : x
2. Step 2: Convert to fraction form
   443,165.06/687,510.56 = 687,510.56/x
3. Step 3: Cross multiply
   443,165.06x = 687,510.56 × 687,510.56
4. Step 4: Simplify right side
   443,165.06x = 472,670,773,549.07
5. Step 5: Solve for x
   x = 472,670,773,549.07/443,165.06
6. Step 6: Final answer
   x = 1,066,579.51