Finding the Third Proportional to 8,664,018 and 13,469,878.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,664,018 : 13,469,878.50 = 13,469,878.50 : x
2. Step 2: Convert to fraction form
   8,664,018/13,469,878.50 = 13,469,878.50/x
3. Step 3: Cross multiply
   8,664,018x = 13,469,878.50 × 13,469,878.50
4. Step 4: Simplify right side
   8,664,018x = 181,437,626,804,762.25
5. Step 5: Solve for x
   x = 181,437,626,804,762.25/8,664,018
6. Step 6: Final answer
   x = 20,941,510.83