Finding the Third Proportional to 4,973,447 and 7,478,640

Step by Step Solution

1. Step 1: Write the proportion equation
   4,973,447 : 7,478,640 = 7,478,640 : x
2. Step 2: Convert to fraction form
   4,973,447/7,478,640 = 7,478,640/x
3. Step 3: Cross multiply
   4,973,447x = 7,478,640 × 7,478,640
4. Step 4: Simplify right side
   4,973,447x = 55,930,056,249,600
5. Step 5: Solve for x
   x = 55,930,056,249,600/4,973,447
6. Step 6: Final answer
   x = 11,245,732.84