Finding the Third Proportional to 1,282,128 and 2,742,132

Step by Step Solution

1. Step 1: Write the proportion equation
   1,282,128 : 2,742,132 = 2,742,132 : x
2. Step 2: Convert to fraction form
   1,282,128/2,742,132 = 2,742,132/x
3. Step 3: Cross multiply
   1,282,128x = 2,742,132 × 2,742,132
4. Step 4: Simplify right side
   1,282,128x = 7,519,287,905,424
5. Step 5: Solve for x
   x = 7,519,287,905,424/1,282,128
6. Step 6: Final answer
   x = 5,864,693.62