Finding the Third Proportional to 4,215,188 and 9,947,215

Step by Step Solution

1. Step 1: Write the proportion equation
   4,215,188 : 9,947,215 = 9,947,215 : x
2. Step 2: Convert to fraction form
   4,215,188/9,947,215 = 9,947,215/x
3. Step 3: Cross multiply
   4,215,188x = 9,947,215 × 9,947,215
4. Step 4: Simplify right side
   4,215,188x = 98,947,086,256,225
5. Step 5: Solve for x
   x = 98,947,086,256,225/4,215,188
6. Step 6: Final answer
   x = 23,473,943.81