Finding the Third Proportional to 478,560 and 697,064

Step by Step Solution

1. Step 1: Write the proportion equation
   478,560 : 697,064 = 697,064 : x
2. Step 2: Convert to fraction form
   478,560/697,064 = 697,064/x
3. Step 3: Cross multiply
   478,560x = 697,064 × 697,064
4. Step 4: Simplify right side
   478,560x = 485,898,220,096
5. Step 5: Solve for x
   x = 485,898,220,096/478,560
6. Step 6: Final answer
   x = 1,015,333.96