Finding the Third Proportional to 3,939,958 and 8,627,246

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,958 : 8,627,246 = 8,627,246 : x
2. Step 2: Convert to fraction form
   3,939,958/8,627,246 = 8,627,246/x
3. Step 3: Cross multiply
   3,939,958x = 8,627,246 × 8,627,246
4. Step 4: Simplify right side
   3,939,958x = 74,429,373,544,516
5. Step 5: Solve for x
   x = 74,429,373,544,516/3,939,958
6. Step 6: Final answer
   x = 18,890,905.32