Finding the Third Proportional to 8,191,326 and 12,718,594.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,191,326 : 12,718,594.50 = 12,718,594.50 : x
2. Step 2: Convert to fraction form
   8,191,326/12,718,594.50 = 12,718,594.50/x
3. Step 3: Cross multiply
   8,191,326x = 12,718,594.50 × 12,718,594.50
4. Step 4: Simplify right side
   8,191,326x = 161,762,646,055,430.25
5. Step 5: Solve for x
   x = 161,762,646,055,430.25/8,191,326
6. Step 6: Final answer
   x = 19,748,041.53