Finding the Third Proportional to 3,640,153 and 7,920,530

Step by Step Solution

1. Step 1: Write the proportion equation
   3,640,153 : 7,920,530 = 7,920,530 : x
2. Step 2: Convert to fraction form
   3,640,153/7,920,530 = 7,920,530/x
3. Step 3: Cross multiply
   3,640,153x = 7,920,530 × 7,920,530
4. Step 4: Simplify right side
   3,640,153x = 62,734,795,480,900
5. Step 5: Solve for x
   x = 62,734,795,480,900/3,640,153
6. Step 6: Final answer
   x = 17,234,109.52