Finding the Third Proportional to 747,864 and 1,621,904

Step by Step Solution

1. Step 1: Write the proportion equation
   747,864 : 1,621,904 = 1,621,904 : x
2. Step 2: Convert to fraction form
   747,864/1,621,904 = 1,621,904/x
3. Step 3: Cross multiply
   747,864x = 1,621,904 × 1,621,904
4. Step 4: Simplify right side
   747,864x = 2,630,572,585,216
5. Step 5: Solve for x
   x = 2,630,572,585,216/747,864
6. Step 6: Final answer
   x = 3,517,447.80