Finding the Third Proportional to 21,163,848 and 31,663,404

Step by Step Solution

1. Step 1: Write the proportion equation
   21,163,848 : 31,663,404 = 31,663,404 : x
2. Step 2: Convert to fraction form
   21,163,848/31,663,404 = 31,663,404/x
3. Step 3: Cross multiply
   21,163,848x = 31,663,404 × 31,663,404
4. Step 4: Simplify right side
   21,163,848x = 1,002,571,152,867,216
5. Step 5: Solve for x
   x = 1,002,571,152,867,216/21,163,848
6. Step 6: Final answer
   x = 47,371,874.57