Finding the Third Proportional to 3,590,400 and 7,685,128

Step by Step Solution

1. Step 1: Write the proportion equation
   3,590,400 : 7,685,128 = 7,685,128 : x
2. Step 2: Convert to fraction form
   3,590,400/7,685,128 = 7,685,128/x
3. Step 3: Cross multiply
   3,590,400x = 7,685,128 × 7,685,128
4. Step 4: Simplify right side
   3,590,400x = 59,061,192,376,384
5. Step 5: Solve for x
   x = 59,061,192,376,384/3,590,400
6. Step 6: Final answer
   x = 16,449,752.78