Finding the Third Proportional to 3,942,347 and 8,553,916

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942,347 : 8,553,916 = 8,553,916 : x
2. Step 2: Convert to fraction form
   3,942,347/8,553,916 = 8,553,916/x
3. Step 3: Cross multiply
   3,942,347x = 8,553,916 × 8,553,916
4. Step 4: Simplify right side
   3,942,347x = 73,169,478,935,056
5. Step 5: Solve for x
   x = 73,169,478,935,056/3,942,347
6. Step 6: Final answer
   x = 18,559,877.89