Finding the Third Proportional to 9,971,067.75 and 21,689,170.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,971,067.75 : 21,689,170.50 = 21,689,170.50 : x
2. Step 2: Convert to fraction form
   9,971,067.75/21,689,170.50 = 21,689,170.50/x
3. Step 3: Cross multiply
   9,971,067.75x = 21,689,170.50 × 21,689,170.50
4. Step 4: Simplify right side
   9,971,067.75x = 470,420,116,978,070.25
5. Step 5: Solve for x
   x = 470,420,116,978,070.25/9,971,067.75
6. Step 6: Final answer
   x = 47,178,509.74