Finding the Third Proportional to 9,971,020.50 and 21,689,061

Step by Step Solution

1. Step 1: Write the proportion equation
   9,971,020.50 : 21,689,061 = 21,689,061 : x
2. Step 2: Convert to fraction form
   9,971,020.50/21,689,061 = 21,689,061/x
3. Step 3: Cross multiply
   9,971,020.50x = 21,689,061 × 21,689,061
4. Step 4: Simplify right side
   9,971,020.50x = 470,415,367,061,721
5. Step 5: Solve for x
   x = 470,415,367,061,721/9,971,020.50
6. Step 6: Final answer
   x = 47,178,256.94