Finding the Third Proportional to 8,139,123 and 12,596,946

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,123 : 12,596,946 = 12,596,946 : x
2. Step 2: Convert to fraction form
   8,139,123/12,596,946 = 12,596,946/x
3. Step 3: Cross multiply
   8,139,123x = 12,596,946 × 12,596,946
4. Step 4: Simplify right side
   8,139,123x = 158,683,048,526,916
5. Step 5: Solve for x
   x = 158,683,048,526,916/8,139,123
6. Step 6: Final answer
   x = 19,496,332.53