Finding the Third Proportional to 8,513,904 and 12,758,401

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513,904 : 12,758,401 = 12,758,401 : x
2. Step 2: Convert to fraction form
   8,513,904/12,758,401 = 12,758,401/x
3. Step 3: Cross multiply
   8,513,904x = 12,758,401 × 12,758,401
4. Step 4: Simplify right side
   8,513,904x = 162,776,796,076,801
5. Step 5: Solve for x
   x = 162,776,796,076,801/8,513,904
6. Step 6: Final answer
   x = 19,118,937.22