Finding the Third Proportional to 6,429,806 and 9,947,055

Step by Step Solution

1. Step 1: Write the proportion equation
   6,429,806 : 9,947,055 = 9,947,055 : x
2. Step 2: Convert to fraction form
   6,429,806/9,947,055 = 9,947,055/x
3. Step 3: Cross multiply
   6,429,806x = 9,947,055 × 9,947,055
4. Step 4: Simplify right side
   6,429,806x = 98,943,903,173,025
5. Step 5: Solve for x
   x = 98,943,903,173,025/6,429,806
6. Step 6: Final answer
   x = 15,388,318.59