Finding the Third Proportional to 3,778,862 and 7,716,336

Step by Step Solution

1. Step 1: Write the proportion equation
   3,778,862 : 7,716,336 = 7,716,336 : x
2. Step 2: Convert to fraction form
   3,778,862/7,716,336 = 7,716,336/x
3. Step 3: Cross multiply
   3,778,862x = 7,716,336 × 7,716,336
4. Step 4: Simplify right side
   3,778,862x = 59,541,841,264,896
5. Step 5: Solve for x
   x = 59,541,841,264,896/3,778,862
6. Step 6: Final answer
   x = 15,756,553.50