Finding the Third Proportional to 478,995.50 and 666,005

Step by Step Solution

1. Step 1: Write the proportion equation
   478,995.50 : 666,005 = 666,005 : x
2. Step 2: Convert to fraction form
   478,995.50/666,005 = 666,005/x
3. Step 3: Cross multiply
   478,995.50x = 666,005 × 666,005
4. Step 4: Simplify right side
   478,995.50x = 443,562,660,025
5. Step 5: Solve for x
   x = 443,562,660,025/478,995.50
6. Step 6: Final answer
   x = 926,026.78