Finding the Third Proportional to 1,913,270 and 4,199,727

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913,270 : 4,199,727 = 4,199,727 : x
2. Step 2: Convert to fraction form
   1,913,270/4,199,727 = 4,199,727/x
3. Step 3: Cross multiply
   1,913,270x = 4,199,727 × 4,199,727
4. Step 4: Simplify right side
   1,913,270x = 17,637,706,874,529
5. Step 5: Solve for x
   x = 17,637,706,874,529/1,913,270
6. Step 6: Final answer
   x = 9,218,618.84