Finding the Third Proportional to 8,503,173 and 12,912,223.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,503,173 : 12,912,223.50 = 12,912,223.50 : x
2. Step 2: Convert to fraction form
   8,503,173/12,912,223.50 = 12,912,223.50/x
3. Step 3: Cross multiply
   8,503,173x = 12,912,223.50 × 12,912,223.50
4. Step 4: Simplify right side
   8,503,173x = 166,725,515,713,952.25
5. Step 5: Solve for x
   x = 166,725,515,713,952.25/8,503,173
6. Step 6: Final answer
   x = 19,607,447.21