Finding the Third Proportional to 3,961,654 and 8,680,502

Step by Step Solution

1. Step 1: Write the proportion equation
   3,961,654 : 8,680,502 = 8,680,502 : x
2. Step 2: Convert to fraction form
   3,961,654/8,680,502 = 8,680,502/x
3. Step 3: Cross multiply
   3,961,654x = 8,680,502 × 8,680,502
4. Step 4: Simplify right side
   3,961,654x = 75,351,114,972,004
5. Step 5: Solve for x
   x = 75,351,114,972,004/3,961,654
6. Step 6: Final answer
   x = 19,020,115.08