Finding the Third Proportional to 490,272 and 693,760

Step by Step Solution

1. Step 1: Write the proportion equation
   490,272 : 693,760 = 693,760 : x
2. Step 2: Convert to fraction form
   490,272/693,760 = 693,760/x
3. Step 3: Cross multiply
   490,272x = 693,760 × 693,760
4. Step 4: Simplify right side
   490,272x = 481,302,937,600
5. Step 5: Solve for x
   x = 481,302,937,600/490,272
6. Step 6: Final answer
   x = 981,705.95