Finding the Third Proportional to 4,342,123 and 9,281,813

Step by Step Solution

1. Step 1: Write the proportion equation
   4,342,123 : 9,281,813 = 9,281,813 : x
2. Step 2: Convert to fraction form
   4,342,123/9,281,813 = 9,281,813/x
3. Step 3: Cross multiply
   4,342,123x = 9,281,813 × 9,281,813
4. Step 4: Simplify right side
   4,342,123x = 86,152,052,566,969
5. Step 5: Solve for x
   x = 86,152,052,566,969/4,342,123
6. Step 6: Final answer
   x = 19,840,997.73