Finding the Third Proportional to 10,007,970 and 21,812,204

Step by Step Solution

1. Step 1: Write the proportion equation
   10,007,970 : 21,812,204 = 21,812,204 : x
2. Step 2: Convert to fraction form
   10,007,970/21,812,204 = 21,812,204/x
3. Step 3: Cross multiply
   10,007,970x = 21,812,204 × 21,812,204
4. Step 4: Simplify right side
   10,007,970x = 475,772,243,337,616
5. Step 5: Solve for x
   x = 475,772,243,337,616/10,007,970
6. Step 6: Final answer
   x = 47,539,335.48