Finding the Third Proportional to 4,421,983 and 9,520,478

Step by Step Solution

1. Step 1: Write the proportion equation
   4,421,983 : 9,520,478 = 9,520,478 : x
2. Step 2: Convert to fraction form
   4,421,983/9,520,478 = 9,520,478/x
3. Step 3: Cross multiply
   4,421,983x = 9,520,478 × 9,520,478
4. Step 4: Simplify right side
   4,421,983x = 90,639,501,348,484
5. Step 5: Solve for x
   x = 90,639,501,348,484/4,421,983
6. Step 6: Final answer
   x = 20,497,478.47