Finding the Third Proportional to 8,513,910 and 12,758,411.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513,910 : 12,758,411.25 = 12,758,411.25 : x
2. Step 2: Convert to fraction form
   8,513,910/12,758,411.25 = 12,758,411.25/x
3. Step 3: Cross multiply
   8,513,910x = 12,758,411.25 × 12,758,411.25
4. Step 4: Simplify right side
   8,513,910x = 162,777,057,624,126.56
5. Step 5: Solve for x
   x = 162,777,057,624,126.56/8,513,910
6. Step 6: Final answer
   x = 19,118,954.47