Finding the Third Proportional to 9,821,884 and 21,427,872

Step by Step Solution

1. Step 1: Write the proportion equation
   9,821,884 : 21,427,872 = 21,427,872 : x
2. Step 2: Convert to fraction form
   9,821,884/21,427,872 = 21,427,872/x
3. Step 3: Cross multiply
   9,821,884x = 21,427,872 × 21,427,872
4. Step 4: Simplify right side
   9,821,884x = 459,153,698,448,384
5. Step 5: Solve for x
   x = 459,153,698,448,384/9,821,884
6. Step 6: Final answer
   x = 46,748,027.00