Finding the Third Proportional to 3,655,434 and 7,920,423

Step by Step Solution

1. Step 1: Write the proportion equation
   3,655,434 : 7,920,423 = 7,920,423 : x
2. Step 2: Convert to fraction form
   3,655,434/7,920,423 = 7,920,423/x
3. Step 3: Cross multiply
   3,655,434x = 7,920,423 × 7,920,423
4. Step 4: Simplify right side
   3,655,434x = 62,733,100,498,929
5. Step 5: Solve for x
   x = 62,733,100,498,929/3,655,434
6. Step 6: Final answer
   x = 17,161,601.19