Finding the Third Proportional to 8,139,128 and 12,596,952

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,128 : 12,596,952 = 12,596,952 : x
2. Step 2: Convert to fraction form
   8,139,128/12,596,952 = 12,596,952/x
3. Step 3: Cross multiply
   8,139,128x = 12,596,952 × 12,596,952
4. Step 4: Simplify right side
   8,139,128x = 158,683,199,690,304
5. Step 5: Solve for x
   x = 158,683,199,690,304/8,139,128
6. Step 6: Final answer
   x = 19,496,339.13