Finding the Third Proportional to 8,961,072 and 13,607,820

Step by Step Solution

1. Step 1: Write the proportion equation
   8,961,072 : 13,607,820 = 13,607,820 : x
2. Step 2: Convert to fraction form
   8,961,072/13,607,820 = 13,607,820/x
3. Step 3: Cross multiply
   8,961,072x = 13,607,820 × 13,607,820
4. Step 4: Simplify right side
   8,961,072x = 185,172,765,152,400
5. Step 5: Solve for x
   x = 185,172,765,152,400/8,961,072
6. Step 6: Final answer
   x = 20,664,130.94