Finding the Third Proportional to 911,040 and 1,388,592

Step by Step Solution

1. Step 1: Write the proportion equation
   911,040 : 1,388,592 = 1,388,592 : x
2. Step 2: Convert to fraction form
   911,040/1,388,592 = 1,388,592/x
3. Step 3: Cross multiply
   911,040x = 1,388,592 × 1,388,592
4. Step 4: Simplify right side
   911,040x = 1,928,187,742,464
5. Step 5: Solve for x
   x = 1,928,187,742,464/911,040
6. Step 6: Final answer
   x = 2,116,468.81