Finding the Third Proportional to 10,107,218 and 21,985,321

Step by Step Solution

1. Step 1: Write the proportion equation
   10,107,218 : 21,985,321 = 21,985,321 : x
2. Step 2: Convert to fraction form
   10,107,218/21,985,321 = 21,985,321/x
3. Step 3: Cross multiply
   10,107,218x = 21,985,321 × 21,985,321
4. Step 4: Simplify right side
   10,107,218x = 483,354,339,473,041
5. Step 5: Solve for x
   x = 483,354,339,473,041/10,107,218
6. Step 6: Final answer
   x = 47,822,688.64