Finding the Third Proportional to 3,785,940 and 8,210,664

Step by Step Solution

1. Step 1: Write the proportion equation
   3,785,940 : 8,210,664 = 8,210,664 : x
2. Step 2: Convert to fraction form
   3,785,940/8,210,664 = 8,210,664/x
3. Step 3: Cross multiply
   3,785,940x = 8,210,664 × 8,210,664
4. Step 4: Simplify right side
   3,785,940x = 67,415,003,320,896
5. Step 5: Solve for x
   x = 67,415,003,320,896/3,785,940
6. Step 6: Final answer
   x = 17,806,675.05