Finding the Third Proportional to 478,642 and 1,009,570

Step by Step Solution

1. Step 1: Write the proportion equation
   478,642 : 1,009,570 = 1,009,570 : x
2. Step 2: Convert to fraction form
   478,642/1,009,570 = 1,009,570/x
3. Step 3: Cross multiply
   478,642x = 1,009,570 × 1,009,570
4. Step 4: Simplify right side
   478,642x = 1,019,231,584,900
5. Step 5: Solve for x
   x = 1,019,231,584,900/478,642
6. Step 6: Final answer
   x = 2,129,423.63