Finding the Third Proportional to 478,720 and 1,036,688

Step by Step Solution

1. Step 1: Write the proportion equation
   478,720 : 1,036,688 = 1,036,688 : x
2. Step 2: Convert to fraction form
   478,720/1,036,688 = 1,036,688/x
3. Step 3: Cross multiply
   478,720x = 1,036,688 × 1,036,688
4. Step 4: Simplify right side
   478,720x = 1,074,722,009,344
5. Step 5: Solve for x
   x = 1,074,722,009,344/478,720
6. Step 6: Final answer
   x = 2,244,990.83