Finding the Third Proportional to 3,982,432 and 8,739,007

Step by Step Solution

1. Step 1: Write the proportion equation
   3,982,432 : 8,739,007 = 8,739,007 : x
2. Step 2: Convert to fraction form
   3,982,432/8,739,007 = 8,739,007/x
3. Step 3: Cross multiply
   3,982,432x = 8,739,007 × 8,739,007
4. Step 4: Simplify right side
   3,982,432x = 76,370,243,346,049
5. Step 5: Solve for x
   x = 76,370,243,346,049/3,982,432
6. Step 6: Final answer
   x = 19,176,785.28