Finding the Third Proportional to 8,191,323 and 12,718,590

Step by Step Solution

1. Step 1: Write the proportion equation
   8,191,323 : 12,718,590 = 12,718,590 : x
2. Step 2: Convert to fraction form
   8,191,323/12,718,590 = 12,718,590/x
3. Step 3: Cross multiply
   8,191,323x = 12,718,590 × 12,718,590
4. Step 4: Simplify right side
   8,191,323x = 161,762,531,588,100
5. Step 5: Solve for x
   x = 161,762,531,588,100/8,191,323
6. Step 6: Final answer
   x = 19,748,034.79