Finding the Third Proportional to 3,941,694 and 8,490,632

Step by Step Solution

1. Step 1: Write the proportion equation
   3,941,694 : 8,490,632 = 8,490,632 : x
2. Step 2: Convert to fraction form
   3,941,694/8,490,632 = 8,490,632/x
3. Step 3: Cross multiply
   3,941,694x = 8,490,632 × 8,490,632
4. Step 4: Simplify right side
   3,941,694x = 72,090,831,759,424
5. Step 5: Solve for x
   x = 72,090,831,759,424/3,941,694
6. Step 6: Final answer
   x = 18,289,301.95