Finding the Third Proportional to 4,207,988 and 9,203,284

Step by Step Solution

1. Step 1: Write the proportion equation
   4,207,988 : 9,203,284 = 9,203,284 : x
2. Step 2: Convert to fraction form
   4,207,988/9,203,284 = 9,203,284/x
3. Step 3: Cross multiply
   4,207,988x = 9,203,284 × 9,203,284
4. Step 4: Simplify right side
   4,207,988x = 84,700,436,384,656
5. Step 5: Solve for x
   x = 84,700,436,384,656/4,207,988
6. Step 6: Final answer
   x = 20,128,488.10