Finding the Third Proportional to 3,637,836 and 7,921,520

Step by Step Solution

1. Step 1: Write the proportion equation
   3,637,836 : 7,921,520 = 7,921,520 : x
2. Step 2: Convert to fraction form
   3,637,836/7,921,520 = 7,921,520/x
3. Step 3: Cross multiply
   3,637,836x = 7,921,520 × 7,921,520
4. Step 4: Simplify right side
   3,637,836x = 62,750,479,110,400
5. Step 5: Solve for x
   x = 62,750,479,110,400/3,637,836
6. Step 6: Final answer
   x = 17,249,397.47