Finding the Third Proportional to 4,978,593 and 7,689,004.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978,593 : 7,689,004.50 = 7,689,004.50 : x
2. Step 2: Convert to fraction form
   4,978,593/7,689,004.50 = 7,689,004.50/x
3. Step 3: Cross multiply
   4,978,593x = 7,689,004.50 × 7,689,004.50
4. Step 4: Simplify right side
   4,978,593x = 59,120,790,201,020.25
5. Step 5: Solve for x
   x = 59,120,790,201,020.25/4,978,593
6. Step 6: Final answer
   x = 11,874,999.66