Finding the Third Proportional to 3,785,978 and 8,214,124

Step by Step Solution

1. Step 1: Write the proportion equation
   3,785,978 : 8,214,124 = 8,214,124 : x
2. Step 2: Convert to fraction form
   3,785,978/8,214,124 = 8,214,124/x
3. Step 3: Cross multiply
   3,785,978x = 8,214,124 × 8,214,124
4. Step 4: Simplify right side
   3,785,978x = 67,471,833,087,376
5. Step 5: Solve for x
   x = 67,471,833,087,376/3,785,978
6. Step 6: Final answer
   x = 17,821,506.91