Finding the Third Proportional to 443,133 and 687,461

Step by Step Solution

1. Step 1: Write the proportion equation
   443,133 : 687,461 = 687,461 : x
2. Step 2: Convert to fraction form
   443,133/687,461 = 687,461/x
3. Step 3: Cross multiply
   443,133x = 687,461 × 687,461
4. Step 4: Simplify right side
   443,133x = 472,602,626,521
5. Step 5: Solve for x
   x = 472,602,626,521/443,133
6. Step 6: Final answer
   x = 1,066,502.89