Finding the Third Proportional to 3,643,994 and 7,974,438

Step by Step Solution

1. Step 1: Write the proportion equation
   3,643,994 : 7,974,438 = 7,974,438 : x
2. Step 2: Convert to fraction form
   3,643,994/7,974,438 = 7,974,438/x
3. Step 3: Cross multiply
   3,643,994x = 7,974,438 × 7,974,438
4. Step 4: Simplify right side
   3,643,994x = 63,591,661,415,844
5. Step 5: Solve for x
   x = 63,591,661,415,844/3,643,994
6. Step 6: Final answer
   x = 17,451,088.40