Finding the Third Proportional to 7,202,865 and 10,987,222.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,202,865 : 10,987,222.50 = 10,987,222.50 : x
2. Step 2: Convert to fraction form
   7,202,865/10,987,222.50 = 10,987,222.50/x
3. Step 3: Cross multiply
   7,202,865x = 10,987,222.50 × 10,987,222.50
4. Step 4: Simplify right side
   7,202,865x = 120,719,058,264,506.25
5. Step 5: Solve for x
   x = 120,719,058,264,506.25/7,202,865
6. Step 6: Final answer
   x = 16,759,866.84