Finding the Third Proportional to 4,709,389.50 and 10,171,647

Step by Step Solution

1. Step 1: Write the proportion equation
   4,709,389.50 : 10,171,647 = 10,171,647 : x
2. Step 2: Convert to fraction form
   4,709,389.50/10,171,647 = 10,171,647/x
3. Step 3: Cross multiply
   4,709,389.50x = 10,171,647 × 10,171,647
4. Step 4: Simplify right side
   4,709,389.50x = 103,462,402,692,609
5. Step 5: Solve for x
   x = 103,462,402,692,609/4,709,389.50
6. Step 6: Final answer
   x = 21,969,387.47