Finding the Third Proportional to 562,584 and 1,213,128

Step by Step Solution

1. Step 1: Write the proportion equation
   562,584 : 1,213,128 = 1,213,128 : x
2. Step 2: Convert to fraction form
   562,584/1,213,128 = 1,213,128/x
3. Step 3: Cross multiply
   562,584x = 1,213,128 × 1,213,128
4. Step 4: Simplify right side
   562,584x = 1,471,679,544,384
5. Step 5: Solve for x
   x = 1,471,679,544,384/562,584
6. Step 6: Final answer
   x = 2,615,928.54