Finding the Third Proportional to 9,415,683 and 19,961,436

Step by Step Solution

1. Step 1: Write the proportion equation
   9,415,683 : 19,961,436 = 19,961,436 : x
2. Step 2: Convert to fraction form
   9,415,683/19,961,436 = 19,961,436/x
3. Step 3: Cross multiply
   9,415,683x = 19,961,436 × 19,961,436
4. Step 4: Simplify right side
   9,415,683x = 398,458,927,182,096
5. Step 5: Solve for x
   x = 398,458,927,182,096/9,415,683
6. Step 6: Final answer
   x = 42,318,642.97