Finding the Third Proportional to 1,534,778 and 3,228,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,534,778 : 3,228,640 = 3,228,640 : x
2. Step 2: Convert to fraction form
   1,534,778/3,228,640 = 3,228,640/x
3. Step 3: Cross multiply
   1,534,778x = 3,228,640 × 3,228,640
4. Step 4: Simplify right side
   1,534,778x = 10,424,116,249,600
5. Step 5: Solve for x
   x = 10,424,116,249,600/1,534,778
6. Step 6: Final answer
   x = 6,791,937.50