Finding the Third Proportional to 2,145,042 and 4,438,566

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,042 : 4,438,566 = 4,438,566 : x
2. Step 2: Convert to fraction form
   2,145,042/4,438,566 = 4,438,566/x
3. Step 3: Cross multiply
   2,145,042x = 4,438,566 × 4,438,566
4. Step 4: Simplify right side
   2,145,042x = 19,700,868,136,356
5. Step 5: Solve for x
   x = 19,700,868,136,356/2,145,042
6. Step 6: Final answer
   x = 9,184,374.08