Finding the Third Proportional to 9,415,490 and 19,960,914

Step by Step Solution

1. Step 1: Write the proportion equation
   9,415,490 : 19,960,914 = 19,960,914 : x
2. Step 2: Convert to fraction form
   9,415,490/19,960,914 = 19,960,914/x
3. Step 3: Cross multiply
   9,415,490x = 19,960,914 × 19,960,914
4. Step 4: Simplify right side
   9,415,490x = 398,438,087,715,396
5. Step 5: Solve for x
   x = 398,438,087,715,396/9,415,490
6. Step 6: Final answer
   x = 42,317,297.10