Finding the Third Proportional to 4,597,707 and 9,991,242

Step by Step Solution

1. Step 1: Write the proportion equation
   4,597,707 : 9,991,242 = 9,991,242 : x
2. Step 2: Convert to fraction form
   4,597,707/9,991,242 = 9,991,242/x
3. Step 3: Cross multiply
   4,597,707x = 9,991,242 × 9,991,242
4. Step 4: Simplify right side
   4,597,707x = 99,824,916,702,564
5. Step 5: Solve for x
   x = 99,824,916,702,564/4,597,707
6. Step 6: Final answer
   x = 21,711,891.75