Finding the Third Proportional to 7,971,026 and 12,689,588

Step by Step Solution

1. Step 1: Write the proportion equation
   7,971,026 : 12,689,588 = 12,689,588 : x
2. Step 2: Convert to fraction form
   7,971,026/12,689,588 = 12,689,588/x
3. Step 3: Cross multiply
   7,971,026x = 12,689,588 × 12,689,588
4. Step 4: Simplify right side
   7,971,026x = 161,025,643,609,744
5. Step 5: Solve for x
   x = 161,025,643,609,744/7,971,026
6. Step 6: Final answer
   x = 20,201,369.76