Finding the Third Proportional to 3,639,964 and 7,995,503

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639,964 : 7,995,503 = 7,995,503 : x
2. Step 2: Convert to fraction form
   3,639,964/7,995,503 = 7,995,503/x
3. Step 3: Cross multiply
   3,639,964x = 7,995,503 × 7,995,503
4. Step 4: Simplify right side
   3,639,964x = 63,928,068,223,009
5. Step 5: Solve for x
   x = 63,928,068,223,009/3,639,964
6. Step 6: Final answer
   x = 17,562,829.80