Finding the Third Proportional to 817,468 and 1,909,366

Step by Step Solution

1. Step 1: Write the proportion equation
   817,468 : 1,909,366 = 1,909,366 : x
2. Step 2: Convert to fraction form
   817,468/1,909,366 = 1,909,366/x
3. Step 3: Cross multiply
   817,468x = 1,909,366 × 1,909,366
4. Step 4: Simplify right side
   817,468x = 3,645,678,521,956
5. Step 5: Solve for x
   x = 3,645,678,521,956/817,468
6. Step 6: Final answer
   x = 4,459,720.16