Finding the Third Proportional to 864,464 and 1,388,960

Step by Step Solution

1. Step 1: Write the proportion equation
   864,464 : 1,388,960 = 1,388,960 : x
2. Step 2: Convert to fraction form
   864,464/1,388,960 = 1,388,960/x
3. Step 3: Cross multiply
   864,464x = 1,388,960 × 1,388,960
4. Step 4: Simplify right side
   864,464x = 1,929,209,881,600
5. Step 5: Solve for x
   x = 1,929,209,881,600/864,464
6. Step 6: Final answer
   x = 2,231,683.31