Finding the Third Proportional to 12,875,910 and 19,315,401

Step by Step Solution

1. Step 1: Write the proportion equation
   12,875,910 : 19,315,401 = 19,315,401 : x
2. Step 2: Convert to fraction form
   12,875,910/19,315,401 = 19,315,401/x
3. Step 3: Cross multiply
   12,875,910x = 19,315,401 × 19,315,401
4. Step 4: Simplify right side
   12,875,910x = 373,084,715,790,801
5. Step 5: Solve for x
   x = 373,084,715,790,801/12,875,910
6. Step 6: Final answer
   x = 28,975,405.68