Finding the Third Proportional to 4,565,947 and 9,509,699

Step by Step Solution

1. Step 1: Write the proportion equation
   4,565,947 : 9,509,699 = 9,509,699 : x
2. Step 2: Convert to fraction form
   4,565,947/9,509,699 = 9,509,699/x
3. Step 3: Cross multiply
   4,565,947x = 9,509,699 × 9,509,699
4. Step 4: Simplify right side
   4,565,947x = 90,434,375,070,601
5. Step 5: Solve for x
   x = 90,434,375,070,601/4,565,947
6. Step 6: Final answer
   x = 19,806,269.12