Finding the Third Proportional to 3,428,328 and 7,312,281

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428,328 : 7,312,281 = 7,312,281 : x
2. Step 2: Convert to fraction form
   3,428,328/7,312,281 = 7,312,281/x
3. Step 3: Cross multiply
   3,428,328x = 7,312,281 × 7,312,281
4. Step 4: Simplify right side
   3,428,328x = 53,469,453,422,961
5. Step 5: Solve for x
   x = 53,469,453,422,961/3,428,328
6. Step 6: Final answer
   x = 15,596,364.59