Finding the Third Proportional to 9,415,557 and 19,961,004

Step by Step Solution

1. Step 1: Write the proportion equation
   9,415,557 : 19,961,004 = 19,961,004 : x
2. Step 2: Convert to fraction form
   9,415,557/19,961,004 = 19,961,004/x
3. Step 3: Cross multiply
   9,415,557x = 19,961,004 × 19,961,004
4. Step 4: Simplify right side
   9,415,557x = 398,441,680,688,016
5. Step 5: Solve for x
   x = 398,441,680,688,016/9,415,557
6. Step 6: Final answer
   x = 42,317,377.58