Finding the Third Proportional to 4,318,257 and 9,300,813

Step by Step Solution

1. Step 1: Write the proportion equation
   4,318,257 : 9,300,813 = 9,300,813 : x
2. Step 2: Convert to fraction form
   4,318,257/9,300,813 = 9,300,813/x
3. Step 3: Cross multiply
   4,318,257x = 9,300,813 × 9,300,813
4. Step 4: Simplify right side
   4,318,257x = 86,505,122,460,969
5. Step 5: Solve for x
   x = 86,505,122,460,969/4,318,257
6. Step 6: Final answer
   x = 20,032,416.43