Finding the Third Proportional to 8,360,628.25 and 12,921,404.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,360,628.25 : 12,921,404.25 = 12,921,404.25 : x
2. Step 2: Convert to fraction form
   8,360,628.25/12,921,404.25 = 12,921,404.25/x
3. Step 3: Cross multiply
   8,360,628.25x = 12,921,404.25 × 12,921,404.25
4. Step 4: Simplify right side
   8,360,628.25x = 166,962,687,791,918.06
5. Step 5: Solve for x
   x = 166,962,687,791,918.06/8,360,628.25
6. Step 6: Final answer
   x = 19,970,112.63