Finding the Third Proportional to 4,991,678 and 7,300,317

Step by Step Solution

1. Step 1: Write the proportion equation
   4,991,678 : 7,300,317 = 7,300,317 : x
2. Step 2: Convert to fraction form
   4,991,678/7,300,317 = 7,300,317/x
3. Step 3: Cross multiply
   4,991,678x = 7,300,317 × 7,300,317
4. Step 4: Simplify right side
   4,991,678x = 53,294,628,300,489
5. Step 5: Solve for x
   x = 53,294,628,300,489/4,991,678
6. Step 6: Final answer
   x = 10,676,695.95