Finding the Third Proportional to 3,990,946 and 8,754,442

Step by Step Solution

1. Step 1: Write the proportion equation
   3,990,946 : 8,754,442 = 8,754,442 : x
2. Step 2: Convert to fraction form
   3,990,946/8,754,442 = 8,754,442/x
3. Step 3: Cross multiply
   3,990,946x = 8,754,442 × 8,754,442
4. Step 4: Simplify right side
   3,990,946x = 76,640,254,731,364
5. Step 5: Solve for x
   x = 76,640,254,731,364/3,990,946
6. Step 6: Final answer
   x = 19,203,530.87