Finding the Third Proportional to 4,666,478 and 9,705,436

Step by Step Solution

1. Step 1: Write the proportion equation
   4,666,478 : 9,705,436 = 9,705,436 : x
2. Step 2: Convert to fraction form
   4,666,478/9,705,436 = 9,705,436/x
3. Step 3: Cross multiply
   4,666,478x = 9,705,436 × 9,705,436
4. Step 4: Simplify right side
   4,666,478x = 94,195,487,950,096
5. Step 5: Solve for x
   x = 94,195,487,950,096/4,666,478
6. Step 6: Final answer
   x = 20,185,563.49