Finding the Third Proportional to 9,865,476 and 21,519,108

Step by Step Solution

1. Step 1: Write the proportion equation
   9,865,476 : 21,519,108 = 21,519,108 : x
2. Step 2: Convert to fraction form
   9,865,476/21,519,108 = 21,519,108/x
3. Step 3: Cross multiply
   9,865,476x = 21,519,108 × 21,519,108
4. Step 4: Simplify right side
   9,865,476x = 463,072,009,115,664
5. Step 5: Solve for x
   x = 463,072,009,115,664/9,865,476
6. Step 6: Final answer
   x = 46,938,638.25