Finding the Third Proportional to 9,821,892 and 21,427,888

Step by Step Solution

1. Step 1: Write the proportion equation
   9,821,892 : 21,427,888 = 21,427,888 : x
2. Step 2: Convert to fraction form
   9,821,892/21,427,888 = 21,427,888/x
3. Step 3: Cross multiply
   9,821,892x = 21,427,888 × 21,427,888
4. Step 4: Simplify right side
   9,821,892x = 459,154,384,140,544
5. Step 5: Solve for x
   x = 459,154,384,140,544/9,821,892
6. Step 6: Final answer
   x = 46,748,058.74