Finding the Third Proportional to 3,806,136 and 8,206,432

Step by Step Solution

1. Step 1: Write the proportion equation
   3,806,136 : 8,206,432 = 8,206,432 : x
2. Step 2: Convert to fraction form
   3,806,136/8,206,432 = 8,206,432/x
3. Step 3: Cross multiply
   3,806,136x = 8,206,432 × 8,206,432
4. Step 4: Simplify right side
   3,806,136x = 67,345,526,170,624
5. Step 5: Solve for x
   x = 67,345,526,170,624/3,806,136
6. Step 6: Final answer
   x = 17,693,935.84