Finding the Third Proportional to 3,786,012 and 8,210,816

Step by Step Solution

1. Step 1: Write the proportion equation
   3,786,012 : 8,210,816 = 8,210,816 : x
2. Step 2: Convert to fraction form
   3,786,012/8,210,816 = 8,210,816/x
3. Step 3: Cross multiply
   3,786,012x = 8,210,816 × 8,210,816
4. Step 4: Simplify right side
   3,786,012x = 67,417,499,385,856
5. Step 5: Solve for x
   x = 67,417,499,385,856/3,786,012
6. Step 6: Final answer
   x = 17,806,995.70