Finding the Third Proportional to 3,879,757.50 and 9,145,666.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,879,757.50 : 9,145,666.50 = 9,145,666.50 : x
2. Step 2: Convert to fraction form
   3,879,757.50/9,145,666.50 = 9,145,666.50/x
3. Step 3: Cross multiply
   3,879,757.50x = 9,145,666.50 × 9,145,666.50
4. Step 4: Simplify right side
   3,879,757.50x = 83,643,215,729,222.25
5. Step 5: Solve for x
   x = 83,643,215,729,222.25/3,879,757.50
6. Step 6: Final answer
   x = 21,558,877.26