Finding the Third Proportional to 9,415,560 and 19,961,010

Step by Step Solution

1. Step 1: Write the proportion equation
   9,415,560 : 19,961,010 = 19,961,010 : x
2. Step 2: Convert to fraction form
   9,415,560/19,961,010 = 19,961,010/x
3. Step 3: Cross multiply
   9,415,560x = 19,961,010 × 19,961,010
4. Step 4: Simplify right side
   9,415,560x = 398,441,920,220,100
5. Step 5: Solve for x
   x = 398,441,920,220,100/9,415,560
6. Step 6: Final answer
   x = 42,317,389.54