Finding the Third Proportional to 9,971,031 and 21,689,091

Step by Step Solution

1. Step 1: Write the proportion equation
   9,971,031 : 21,689,091 = 21,689,091 : x
2. Step 2: Convert to fraction form
   9,971,031/21,689,091 = 21,689,091/x
3. Step 3: Cross multiply
   9,971,031x = 21,689,091 × 21,689,091
4. Step 4: Simplify right side
   9,971,031x = 470,416,668,406,281
5. Step 5: Solve for x
   x = 470,416,668,406,281/9,971,031
6. Step 6: Final answer
   x = 47,178,337.77