Finding the Third Proportional to 9,971,028 and 21,689,075.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,971,028 : 21,689,075.25 = 21,689,075.25 : x
2. Step 2: Convert to fraction form
   9,971,028/21,689,075.25 = 21,689,075.25/x
3. Step 3: Cross multiply
   9,971,028x = 21,689,075.25 × 21,689,075.25
4. Step 4: Simplify right side
   9,971,028x = 470,415,985,200,162.56
5. Step 5: Solve for x
   x = 470,415,985,200,162.56/9,971,028
6. Step 6: Final answer
   x = 47,178,283.44