Finding the Third Proportional to 1,478,784 and 2,113,128

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478,784 : 2,113,128 = 2,113,128 : x
2. Step 2: Convert to fraction form
   1,478,784/2,113,128 = 2,113,128/x
3. Step 3: Cross multiply
   1,478,784x = 2,113,128 × 2,113,128
4. Step 4: Simplify right side
   1,478,784x = 4,465,309,944,384
5. Step 5: Solve for x
   x = 4,465,309,944,384/1,478,784
6. Step 6: Final answer
   x = 3,019,582.27